Our Map Collection consists of an estimated 200,000 maps, over 3,000 atlases and geographic reference books, and more than 25,000 Colorado historical aerial photographs covering a broad range of subject areas. For assistance accessing these collections or to view these maps in print at the Earth Sciences & Map Library, please email firstname.lastname@example.org or call 303-492-7578 to schedule an appointment.
These are websites with excellent historical map coverage recommended by the map librarians at CU Boulder. If you are interested in viewing historical maps in our print collections, please email email@example.com. You can also view and download historical maps of Colorado from our four digital map collections.
Consider using a gazetteer
A gazetteer is a place name dictionary or index used to search the history of a place. This is particularly helpful for learning about places whose names or boundaries have changed over time or for names with variant spellings. If a place name has changed over time, you can incorporate its other names in your search. You can search OneSearch with the name of the country or region you are interested in and the word "gazetteer" or "place names."
National and International data:
The Map library has a wealth of historic maps all the way up through contemporary maps. They have aerial photographs of Colorado from multiple decades up through the present. They have maps of international cities, but specialize in Colorado. Contact firstname.lastname@example.org to set up a research appointment to find print maps.
To cite a map or aerial photograph, use the same basic style guidelines as you use to cite your books and articles (for example: MLA, APA, or Chicago Manual of Style). However, maps/aerial photographs have some unusual elements, such as scale, that should be included.
Dartmouth College Library has an excellent guide on citing cartographic resources.