Between 1933 and 1942, the Civilian Conservation Corps made improvements to more than 40 National Wildlife Refuges across the country. This work included construction and habitat management which had a permanent impact on the future of the refuge system.
Surviving photographs and other records of CCC involvement have been gathered from the Smithsonian Archives, the National Archives, the National Conservation Training Center archive, and other sources. You can browse them here, organized by refuge.