|Ruhr Metropolitan Region
map of the Ruhr metropolitan region within Germany
|• Body||Regionalverband Ruhr|
|• Metro||4,435 km2 (1,712 sq mi)|
|Highest elevation||441 m (1,447 ft)|
|Lowest elevation||13 m (43 ft)|
|• Metro density||1,646/km2 (4,260/sq mi)|
|Time zone||CET (UTC+1)|
|Nominal||€ 136.3 billion|
The Ruhr (German pronunciation: [ˈʁuːɐ̯], German: Ruhrgebiet), or the Ruhr district, Ruhr region or Ruhr valley, is an urban area in North Rhine-Westphalia, Germany.[lower-alpha 1] With a population density of 2,800/km² and a population of eight and a half million, it is the largest urban agglomeration in Germany. It consists of several large, industrial cities bordered by the rivers Ruhr to the south, Rhine to the west, and Lippe to the north. In the southwest it borders the Bergisches Land. It is considered part of the larger Rhine-Ruhr metropolitan region of more than 12 million people, which is among the largest in Europe.
From west to east, the region includes the cities of Duisburg, Oberhausen, Bottrop, Mülheim an der Ruhr, Essen, Gelsenkirchen, Bochum, Herne, Hagen, Dortmund, and Hamm, as well as parts of the more "rural" districts of Wesel, Recklinghausen, Unna and Ennepe-Ruhr-Kreis. The most populous cities are Dortmund (approx. 572,000), Essen (approx. 566,000) and Duisburg (approx. 486,000). The Ruhr area doesn't have an administrative center; each city in the area has its own administration, although there exists the supracommunal "Regionalverband Ruhr" institution in Essen. Historically, the western Ruhr towns, such as Duisburg and Essen, belonged to the historic region of the Rhineland, whereas the eastern part of the Ruhr, including Gelsenkirchen, Bochum, Dortmund and Hamm, were part of the region of Westphalia. Since the 19th century, these districts have grown together into a large complex with a vast industrial landscape, inhabited by some 7.3 million people (including Düsseldorf and Wuppertal).
For 2010, the Ruhr region was one of the European Capitals of Culture.
The urban landscape of the Ruhr extends from the Lower Rhine Basin east to the Westphalian Plain and south to the hills of the Rhenish Massif. Through the centre of the Ruhr runs a segment of the loess belt that extends across Germany from west to east. Historically, this loess belt has underlain some of Germany's richest agricultural regions.
Geologically, the region is defined by coal-bearing layers from the upper Carboniferous period. The coal seams reach the surface in a strip along the River Ruhr and dip downward from the river to the north. Beneath the River Lippe, the coal seams lie at a depth of 600 to 800 metres (2,000 to 2,600 feet). The thickness of the coal layers ranges from one to three metres (three to ten feet). This geological feature played a decisive role in the development of coal mining in the Ruhr.
According to the Regionalverband Ruhr (RVR, Ruhr Regional Association), 37.6% of the region's area is built up. A total of 40.7% of the region's land remains in agricultural use. Forests account for 17.6%, and bodies of water and other types of land use occupy the rest. The inclusion of four mainly rural districts in the otherwise mainly industrial Ruhr helps to explain the large proportion of agricultural and forested land. In addition, the city boroughs of the Ruhr region have outlying districts with a rural character.
Seen on a map, the Ruhr could be considered a single city, since—at least in the north-south dimension—there are no visible breaks between the individual city boroughs. Thus the Ruhr is described as a polycentric urban area, which shares a similar history of urban and economic development.
Because of its history, the Ruhr is structured differently from monocentric urban regions such as Berlin and London, which developed through the rapid merger of smaller towns and villages with a growing central city. Instead, the individual city boroughs and urban districts of the Ruhr grew independently of one another during the Industrial Revolution. The population density of the central Ruhr is about 2,100 inhabitants per square kilometre (about 5,400 per square mile)—low compared to other German cities.
Between the constituent urban areas are relatively open suburbs and some open land with agricultural fields. In some places, the borders between cities in the central Ruhr are unrecognizable due to continuous development across them.
Replanting of brownfield land has created new parks and recreation areas. The Emscher Landschaftspark (Emscher Landscape Park) lies along the River Emscher, formerly virtually an open sewer, parts of which have undergone natural restoration. This park connects strips of parkland running from north to south, which were developed through regional planning in the 1920s, to form a green belt between the Ruhr cities from east to west.
Historical development of the term "Ruhr"
The 1911 edition of Encyclopaedia Britannica has only one definition of "Ruhr": "a river of Germany, an important right-bank tributary of the lower Rhine." The use of the term "Ruhr" for the industrial region started in Britain only after World War I, when French and Belgian troops had occupied the Ruhr district and seized its prime industrial assets in lieu of unpaid reparations in 1923. In 1920, the International Labour Office published a report entitled Coal Production in the Ruhr District. In 1923, the Canadian Commercial Intelligence Journal, Volume 28, Issue 1013, includes the article, "Exports from the Ruhr district of Germany". In 1924 the English and American press was still talking of the "French occupation of the Ruhr Valley" or "Ruhr District". A 62-page publication seems to be responsible for the use of "Ruhr" as a short form of the then more common "Ruhr District" or "Ruhr Valley": Ben Tillett, A. Creech-Jones and Samuel Warren's The Ruhr: The Report of a Deputation from the Transport and General Workers Union (London 1923). Yet "The report of a deputation from the Transport and General Workers' Union which spent a fortnight examining the problems in the Ruhr Valley", published in The Economic Review, Volume 8, 1923, is still using the traditional term. In the same year, "Objections by the United States to discriminatory regulations on exports from the occupied region of the Ruhr" was published in Papers Relating to the Foreign Relations of the United States.
The 1926 Encyclopaedia Britannica, in addition to its article on the river Ruhr, has a further article on "RUHR, the name given to a district of Westphalia, Germany." Thus the name "Ruhr" was given to the region (as a short form of "Ruhr District" or "Ruhr Valley") only a few years before the publication of this edition of the Encyclopaedia Britannica. Even after World War II, the term "Ruhr" may not have been in general use for the region: it was defined in Documents on American Foreign Relations (1948): "For the purposes of the present Agreement: (i) the expression 'Ruhr' means the areas, as presently constituted, in Land North Rhine–Westphalia, listed in the Annex to this Agreement." However, Lawrence K. Cecil and Philip Hauge Abelson still write in 1967: "In the first place, the average person uses the term 'Ruhr' indiscriminately as the Ruhr River or the Ruhr district, two entirely different things. The Ruhr River is only one of half a dozen rivers in the Ruhr district, in addition to the Rhine. The Rhine itself runs through the heart of the Ruhr district." According to Merriam Webster's Geographical Dictionary, a standard reference on place names around the world, the name "Ruhr" refers to the river. The name preferred for the region in this dictionary is "Ruhrgebiet", followed by "Ruhr Valley".
History of the region
During the Middle Ages, much of the region that was later called the Ruhrgebiet was situated in the County of Mark, the Duchies of Cleves and Berg and the territories of the bishop of Münster and the archbishop of Cologne. The region included some villages and castles, and was mainly agrarian: its loess soil made it one of the richer parts of western Germany. The free imperial city of Dortmund was the trading and cultural centre, lying on the Hellweg, an important east-west trading route, that also brought prosperity to the town of Duisburg. Both towns were members of the Hanseatic League.
The development of the region into an urbanized industrial area started in the late 18th century with the early industrialisation in the nearby Wupper Valley in the Bergisches Land. By around 1820, hundreds of water-powered mills were producing textiles, lumber, shingles and iron in automated processes here. And in even more workshops in the hills, highly skilled workers manufactured knives, tools, weapons and harnesses, using water, coal and charcoal. History has no established name for this phase of the industrial revolution, but one could call it the early waterpowered industrial revolution.
As the machines became bigger and moved from water power to steam power, locally mined coal and charcoal became expensive and there was not enough of it. The Bergische industry ordered more and more coal from the new coal mining area along the Ruhr river. Impressive and expensive railways were constructed through the hilly Wupper region, to bring coal, and later steel, in from the Ruhr, and for outward transport of finished products.
By 1850, there were almost 300 coal mines in operation in the Ruhr area, in and around the central cities of Duisburg, Essen, Bochum and Dortmund. The coal was exported or processed in coking ovens into coke, used in blast furnaces, producing iron and steel. In this period the name Ruhrgebiet became common. Before the coal deposits along the Ruhr were exhausted, the mining industry moved northward to the Emscher and finally to the Lippe, drilling ever deeper mines as it went. Locks built at Mülheim on the Ruhr led to the expansion of Mülheim as a port. With the construction of the Cologne-Minden railway in the late 19th century, several iron works were built within the borders of the present-day city of Oberhausen.
The population climbed rapidly. Towns with only 2000 to 5000 people in the early 19th century grew in the following 100 years to over 100,000. Skilled mineworkers were recruited from other regions to the Ruhr's mines and steel mills and unskilled people started to move in. From 1860 onwards there was large-scale migration from Silesia, Pomerania, East Prussia and Posen to the Ruhr. Many of them were Polish speakers and they were treated as second class citizens. In 1899 this led to a revolt in Herne of young Polish workers, who later established a Workers' Union. Skilled workers in the mines were often housed in "miners' colonies", built by the mining firms. By the end of the Prussian Kingdom in 1870, over 3 million people lived in the Ruhrgebiet and the new coal-mining district had become the largest industrial region of Europe.
During World War I the Ruhrgebiet functioned as Germany's central weapon factory. At a big Essen company, F. Krupp A.G., the number of employees rose from 40,000 to 120,000 or more, in four years. They were partly women, partly forced labourers.
In March 1921, French and Belgian troops occupied Duisburg, which under the Treaty of Versailles formed part of the demilitarized Rhineland. In January 1923 the whole Ruhrgebiet was occupied as a reprisal after Germany failed to fulfill World War I reparation payments as agreed in the Versailles Treaty. The German government responded with "passive resistance", letting workers and civil servants refuse orders and instructions by the occupation forces. Production and transport came to a standstill and the financial consequences contributed to German hyperinflation and ruined public finances in Germany and France, as well as several other countries. Passive resistance was called off in late 1923, allowing Germany to implement a currency reform and to negotiate the Dawes Plan, which led to the withdrawal of the French and Belgian troops from the Ruhr in 1925.
On 7 March 1936, Adolf Hitler took a massive gamble by sending 30,000 troops into the Rhineland. As Hitler and other Nazis admitted, the French army alone could have destroyed the Wehrmacht. The French passed the problem to the British, who found that the Germans had the right to "enter their own backyard", and no action was taken. In the League of Nations, the Soviet delegate Maxim Litvinov was the only one who proposed economic sanctions against Germany. According to historian Samuel Mitcham, the Rhineland crisis was the last chance for the Allies to defeat Hitler while the odds were overwhelmingly on their side. All restraint on German rearmament could now be removed, and was. France's eastern allies (the Soviet Union, Poland, Czechoslovakia, Romania and Yugoslavia) concluded that since the French refused to defend their own border, they certainly would not stand up for their allies in the East. Hitler could now continue eroding the alliance system that France had built since 1919. On October 16, 1936, Belgium repudiated the 1921 alliance with France and declared its absolute neutrality. In October 1937, Belgium signed a non-aggression pact with Germany.
|WWII Ruhr Bombing Operations|
|1943 March:||Battle of the Ruhr|
|1943 May:||Operation Chastise|
|1944 October:||Operation Hurricane|
|1944 September:||Bombing of German oil
facilities during World War II
During World War II, the bombing of the Ruhr in 1940-44 caused a loss of 30% of plant and equipment (compared to 15–20% for German industry as a whole). A second battle of the Ruhr (6/7 October 1944–end of 1944) began with an attack on Dortmund. In addition to the strategic bombing of the Ruhr, in April 1945, the Allies trapped several hundred thousand Wehrmacht troops in the Ruhr Pocket.
After the war, the Level of Industry plans for Germany abolished all German munitions factories and civilian industries that could support them and severely restricted civilian industries of military potential. The French Monnet Plan pushed for an internationalization of the area, and the subsequent Ruhr Agreement was imposed as a condition for the establishment of the Federal Republic of Germany.
During the Cold War, the Western allies anticipated that any Red Army thrust into Western Europe would begin in the Fulda Gap and have the Ruhr as a primary target. Increased German control of the area was limited by the pooling of German coal and steel into the multinational European Coal and Steel Community in 1951. The nearby Saar region, containing much of Germany's remaining coal deposits, was handed over to economic administration by France as a protectorate in 1947 and did not politically return to Germany until January 1957, with economic reintegration occurring two years later. Parallel to the question of political control of the Ruhr, the Allies tried to decrease German industrial potential by limitations on production and dismantling of factories and steel plants, predominantly in the Ruhr. By 1950, after the virtual completion of the by-then much watered-down "level of industry" plans, equipment had been removed from 706 manufacturing plants in the west, and steel production capacity had been reduced by 6.7 million tons. Dismantling finally ended in 1951. In all, less than 5% of the industrial base was dismantled.
The Ruhr was at the center of the German economic miracle of the 1950s and 1960s, as very rapid economic growth (9% a year) created a heavy demand for coal and steel.
After 1973, Germany was hard hit by a worldwide economic crisis, soaring oil prices, and increasing unemployment, which jumped from 300,000 in 1973 to 1.1 million in 1975. The Ruhr region was hardest hit, as the easy-to-reach coal mines became exhausted, and German coal was no longer competitive. Likewise the Ruhr steel industry went into sharp decline, as its prices were undercut by lower-cost suppliers such as Japan. The welfare system provided a safety net for the large number of unemployed workers, and many factories reduced their labor force and began to concentrate on high-profit specialty items.
As demand for coal decreased after 1958, the area went through phases of structural crisis (see steel crisis) and industrial diversification, first developing traditional heavy industry, then moving into service industries and high technology. The air and water pollution of the area are largely a thing of the past although some issues take a long time to solve. In 2005, Essen was the official candidate for nomination as European Capital of Culture for 2010.
The ten largest cities of the Ruhr:
|Pos.||Name||Pop. 2010||Area (km²)||Pop. per km²||map|
|10||Mülheim an der Ruhr||169,917||91.29||1,861|
The local dialect of German is commonly called Ruhrdeutsch or Ruhrpottdeutsch, although there is really no uniform dialect that justifies designation as a single dialect. It is rather a working class sociolect with influences from the various dialects found in the area and changing even with the professions of the workers. A major common influence stems from the coal mining tradition of the area. For example, quite a few locals prefer to call the Ruhr either "Pott", which is a derivate of "Pütt" (pitmen's term for mine; cp. the English "pit"), or "Revier".
During the 19th century the Ruhr attracted up to 500,000 ethnic Poles, Masurians and Silesians from East Prussia and Silesia in a migration known as Ostflucht (flight from the east). By 1925, the Ruhrgebiet had around 3.8 million inhabitants. Most of the new inhabitants came from Eastern Europe, but immigrants also came from France, Ireland, and the United Kingdom. It has been claimed that immigrants came to the Ruhr from over 140 different nations. Almost all their descendants today speak German as a mother tongue, and for various reasons they do not identify with their Polish roots and traditions, often only their Polish family names remaining as a sign of their past.
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|This section requires expansion. (February 2011)|
The economy is largely based on industry and exports.
- Douglas Holding
- Evonik Industries
- Franz Haniel & Cie.
- Heinrich Deichmann-Schuhe GmbH
- Klöckner & Co.
All public transport companies in the Ruhr are run under the umbrella of the Verkehrsverbund Rhein-Ruhr, which provides a uniform ticket system valid for the entire area. The Ruhr region is well-integrated into the national rail system, the Deutsche Bahn, for both passenger and goods services. The Ruhr area also contains the longest tram system in the world, with tram and Stadtbahn services from Witten to Krefeld. Originally the system was even bigger, it was possible to travel from Unna to Bad Honnef without using railway or bus services.
The Ruhr has one of the densest motorway networks in all of Europe, with dozens of Autobahns and similar Schnellstraßen (expressways) crossing the region. The Autobahn network is built in a grid network, with four east-west (A2, A40, A42, A44) and seven north-south (A1, A3, A43, A45, A52, A57, A59) routes. The A1, A2 and A3 are mostly used by through traffic, while other autobahns have a more regional function. Both the A44 and the A52 have several missing links, in various stages of planning. Some missing sections are currently not planned to be constructed.
Additional expressways serve as bypasses and local routes, especially around Dortmund and Bochum. Due to the density of the autobahns and expressways, Bundesstraßen are less important for intercity traffic. The first Autobahns in the Ruhr opened during the mid-1930s. Due to the density of the network, and the number of alternative routes, traffic volumes are generally lower than other major metropolitan areas in Europe. Traffic congestion is an everyday occurrence, but far less so than in the Randstad in the Netherlands, another polycentric urban area. Most important Autobahns have six lanes, but there are no eight-lane Autobahns in the Ruhr.
Düsseldorf International Airport is the intercontinental airport for North Rhine-Westphalia and is within 20 km of most of the Western Ruhr area. It is served by the Düsseldorf Flughafen and Düsseldorf Flughafen Terminal railway stations, with its several parking lots, terminals and stations being connected by the Skytrain.
Dortmund Airport in the Eastern Ruhr is a mid-sized airport, offering scheduled flights to domestic and European destinations and its approximately 1.9 million passengers in 2013. Dortmund Airport is served by an express bus to Dortmund main station, a shuttle bus to the nearby railway station Holzwickede/Dortmund Flughafen, a bus connecting to Stadtbahn line U47, as well as a bus to the city of Unna.
- Metropolitan regions in Germany
- Occupation of the Ruhr (1923–1924)
- Silesian metropolitan area
- Upper Silesian Coal Basin
- Other colloquial names that are used include Ruhrpott, Revier or Kohlenpott.
- "The Heavy Industrial Belt' is commonly, though inaccurately, referred to as the Ruhr. This is a belt of low and level land on the northern edge of the uplands, known as the Sauerland through which flows the Ruhr from east to west" (Dickinson 1945, p. 70).
- "Few foreigners know that in fact 'the Ruhr' is the name of a 150-mile-long Rhine right-bank tributary which, after meandering through the industrial basin now named after it, enters its parent near Europe's greatest inland port, Duisburg" (GI staff 1966, p. 30).
- "The territory through which the Ruhr flows is called the Ruhr district" (Osmańczyk Mango, p. 1970).
- "Many industries were built in the Ruhr region, where both iron ore and coal were found" (Lane 2001, p. 24).
- highest: Wengeberg in Breckerfeld, lowest: Xanten
- Samuel Shepard Jones and Denys Peter Myers, Documents on American Foreign Relations, Volume 10 (1948), p. 125: "Part IX: Definitions Article 29".
- Lawrence K. Cecil and Philip Hauge Abelson, Water Reuse (American Institute of Chemical Engineers, 1967), p. 122.
- Prof. Dr. Klaus Tenfelde. ""Das Ruhrgebiet! Von der Steinzeit bis zur Kulturhauptsatdt 2010" part 2". Retrieved 2001-11-20.
- Friedrich Harkort, "Die Eisenbahn von Minden nach Köln", Brune, Hagen 1833
- Prof. Dr. Klaus Tenfelde. ""Das Ruhrgebiet! Von der Steinzeit bis zur Kulturhauptsatdt 2010" part 3". Retrieved 2001-11-20.
- R.W. Davies (2014). The Industrialisation of Soviet Russia Volume 6: The Years of Progress: The Soviet Economy, 1934-1936. Palgrave Macmillan. p. 275. Cite error: Invalid
<ref>tag; name "R.W._Davies.2C_Oleg_Khlevnyuk.2C_Stephen_G._Wheatcroft_2014_275" defined multiple times with different content
- William L. Shirer, Ron Rosenbaum (1960). The Rise and Fall of the Third Reich: A History of Nazi Germany. Simon & Schuster. p. 293.
- A.J.P. Taylor (2001). English History 1914-1945. Oxford University Press. p. 386.
- A.J.P. Taylor (2001). English History 1914-1945. Oxford University Press. p. 386.
- Samuel W. Mitcham (2008). The Rise of the Wehrmacht: Vol. 1. Praeger. pp. 66–67.
- Samuel W. Mitcham (2008). The Rise of the Wehrmacht, Volume 1. Praeger. p. 66.
- German-Belgian Pact Concluded, October 13, 1937
- Botting (1985), p. 125
- Levine 1992, p. 173.
- French Directorate for Economic Affairs, Memorandum on the separation of the German industrial regions, 8 September 1945
- Yoder (1955), pp. 345–358
- Gareau (1961), pp. 517–534
- John Ardagh, Germany and the Germans (1987) p 84
- Ardagh, Germany and the Germans (1987) pp 74–82
- Christian Berndt, "Ruhr Firms between Dynamic Change and Structural Persistence. Globalization, the 'German Model' and Regional Place-Dependence", Transactions of the Institute of British Geographers New Series, Vol. 23, No. 3 (1998), pp. 331–352 in JSTOR
- De Ridder K. et al., 2008. Simulating the impact of urban sprawl on air quality and population exposure in the German Ruhr area. Part I: Reproducing the base state. Atmospheric Environment 42,7059–7069
- De Ridder K et al., 2008. Simulating the impact of urban sprawl on air quality and population exposure in the German Ruhr area. Part II: Development and evaluation of an urban growth scenario. Atmospheric Environment 42,7070–7077
- http://en.kulturhauptstadt-europas.de/start.php "Essen for the Ruhrgebiet" Archived September 15, 2008 at the Wayback Machine
- Botting, Douglas (1985), From the Ruins of the Reich: Germany 1945–1949, New York: Crown Publishing, ISBN 0-517-55865-3
- Dickinson, Robert E. (1945), The Regions of Germany, 7, London: Routledge, p. 70
- French Directorate for Economic Affairs (8 September 1945), Memorandum on the separation of the German industrial regions
- Gareau, Frederick H. (June 1961), "Morgenthau's Plan for Industrial Disarmament in Germany", Western Political Quarterly, 14 (2): 517–53, JSTOR 443604
- GI staff (1966), German International, 10, p. 30
- Osmańczyk, Edmund Jan; Mango, Anthony (2003), Encyclopedia of the United Nations and International Agreements: A to F, p. 1970
- Lane, Kathryn (2001), Germany: The Land, p. 24
- Levine, Alan J (1992), "Second Battle of the Ruhr", The Strategic Bombing of Germany: 1940-1945 (illustrated ed.), Greenwood Publishing Group, pp. 172–174, ISBN 9780275943196
- Yoder, Amos (July 1955), "The Ruhr Authority and the German Problem", Review of Politics, 17 (3): 345–358, JSTOR 1404797, doi:10.1017/s0034670500014261
- Kift, Roy, Tour the Ruhr: The English language guide (3rd ed., 2008) (ISBN 3-88474-815-7) Klartext Verlag, Essen
- Berndt, Christian. Corporate Germany Between Globalization and Regional Place Dependence: Business Restructuring in the Ruhr Area (2001)
- Crew, David. Town in the Ruhr: A Social History of Bochum, 1860–1914 (1979) (ISBN 0231043007)
- Fischer, Conan. The Ruhr Crisis, 1923–1924 (2003)
- Gillingham, John. "Ruhr Coal Miners and Hitler's War", Journal of Social History Vol. 15, No. 4 (Summer, 1982), pp. 637–653 in JSTOR* Chauncy D. Harris, "The Ruhr Coal-mining District", Geographical Review, 36 (1946), 194–221.
- Gillingham, John. Industry and Politics in the Third Reich: Ruhr Coal, Hitler, and Europe (1985) (ISBN 0231062605)
- Pounds, Norman J. G. The Ruhr: A Study in Historical and Economic Geography (1952) online
- Pierenkemper, Toni. "Entrepreneurs in Heavy Industry: Upper Silesia and the Westphalian Ruhr Region, 1852 to 1913", Business History Review Vol. 53, No. 1 (Spring, 1979), pp. 65–78 in JSTOR
- Royal Jae Schmidt. Versailles and the Ruhr: Seedbed of World War II (1968)
- Spencer, Elaine Glovka. "Employer Response to Unionism: Ruhr Coal Industrialists before 1914" Journal of Modern History Vol. 48, No. 3 (Sep., 1976), pp. 397–412 in JSTOR
- Spencer, Elaine Glovka. Management and Labor in Imperial Germany: Ruhr Industrialists as Employers, 1896–1914. Rutgers University Press. (1984) online
- Todd, Edmund N. "Industry, State, and Electrical Technology in the Ruhr Circa 1900", Osiris 2nd Series, Vol. 5, (1989), pp. 242–259 in JSTOR
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- Ruhr Tourism
- Post-Surrender Program for Germany (Sept. 1944)
- Ruhr Delegation of the United States of America, Council of Foreign Ministers American Embassy Moscow, March 24, 1947
- Draft, The President's Economic Mission to Germany and Austria, Report 3, March, 1947; OF 950B: Economic Mission as to Food…; Truman Papers.
- France, Germany and the Struggle for the War-making Natural Resources of the Rhineland Describes the contest for the Ruhr and Saar over the centuries.
- Ruhrgebietsbilder: Photos about the Ruhr