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Historical Maps: Digital

Using CU-Boulder Digital Map Collections

The Earth Sciences & Map Library has four digital map collections. More information on each collection can be found on the pages linked below. 

Click on "Category Pages" to see smaller subsets of these digital collections. Images may be saved or downloaded from the digital collection site.

For assistance accessing these collections or to view these maps in print at the Earth Sciences & Map Library, please email or call 303-492-7578 to schedule an appointment.

Other Online Collections

Databases with Historical Maps

The following databases are accessible to CU-Boulder affiliates with an IdentiKey. People not affiliated with CU-Boulder may access these databases by using computers in the Libraries:

Summer 2023: Major System Updates

You'll notice some changes as we work.
  • New Library Catalog: try it out and tell us what you think
  • Prospector will be unavailable from May 19 through Spring 2024. 

Full details on our library services platform migration project & timeline.

Ask A Map Librarian

Call (303) 492-7578


More about the Map Collection


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Map Collection
2200 Colorado Avenue
Boulder, CO 80302
(303) 492-7578


Portion of the 1890 East Denver USGS topographic map

A portion of the 1890 East Denver USGS topographic map