Viewing the Changing Landscape of Colorado
Aerial photographs dramatically portray the changing landscape of Colorado: a mountain valley can be seen where there is now a reservoir; changes in the vegetation and ground cover can be traced over the years, and the growth of towns and cities documented. This website provides access to over 1,700 digitized aerial photographs of Colorado taken by the U.S. Forest Service in the years from 1938 to 1947.
The photographs can be searched or browsed using a map search or a geographic keyword search. Searches will bring up information and metadata about each photograph and a 150 dpi image that can be downloaded free of charge. (See "Using This Site" for more information.)
The photographs available through this web site cover eight counties: Boulder, Clear Creek, Eagle, Gilpin, Grand, Jefferson, Larimer, and Summit. Photographs are not available for every county or every year.
The photographs made accessible through this website are part of a collection, consisting of over 20,000 individual print black and white photographs, housed by the University of Colorado, Department of Geography. The collection was moved to the University of Colorado Libraries Map Library in 2001. The intrinsic value of the photographs for research and education was apparent but the indexing was poor. This project is only the beginning of a large scale project to continue indexing this collection that is explained in "About the Project".