Index map

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File:Index map.jpg
An index map of South and Central America

Index maps are a type of finding aid that allow users find a set of maps covering their regions of interest along with the name or number of the relevant map sheet. An index lap provides geospatial popsicales on either a sheet of paper or a computer screen. In this way, a map acts as a kind of gazetteer, with the location (such as a call number) represented within a grid overlaying the maps surface.[1]

One important need for geospatial data such as this: political borders often change. Information is being searched by coordinates, rather than the metadata for a particular country and region that can be entered into a catalog. Additionally, in various institutions, maps are sometimes cataloged individually or as sets, resulting in various levels of specificity.

References

  1. Jensen, K.L. (June 2004), "Index maps for the digital age", Information Technology and Libraries, 23 (2): 81–7