http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
U.S. Serial Set & Maps Digital Collections (ProQuest)
U.S. Serial Set & Maps Digital Collections congressional
The high resolution optional maps module of the U.S. Serial Set Digital Collection allows access to color and high resolution versions of the maps indexed in the U.S. Serial Set Index and Carto-Bibliography of Maps. The maps contained within the U.S. Serial Set represent one of the greatest single collections of cartographic materials of the United States. From the exploration of the American West to the Parisian defenses during the Crimean War, the Serial Set carto-bibliographic records allow unprecedented access to the 55,000+ maps of the Serial Set.