Films preserved by

University of Minnesota, Bell Museum of Natural History ( )

Island Treasure (1957), Walter Breckenridge's study of the natural history of Casey Island in the upper Mississippi River (2002 Federal Grants).

Migration Mysteries (1960s), silent film by naturalist Walter Breckenridge documenting animal migration across Minnesota (2001 Partnership Grants).

Spring Comes to the Subarctic (1955), Walter Breckenridge's short film about the flora and fauna of Canada's Churchill Region (2002 Federal Grants).

Wood Duck Ways (1940–60s), Walter Breckenridge's nature film on the behavior of the wood duck (2001 Federal Grants).