Klamath Basin National Wildlife Refuge Complex was created in 1908.
Klamath Marsh National Wildlife Refuge was created in 1958.
Upper Klamath National Wildlife Refuge was created in 1928.
Lower Klamath National Wildlife Refuge was created in 1908.
San Diego National Wildlife Refuge Complex was created in 1972.
Caribbean Islands National Wildlife Refuge Complex was created in 1974.
Mark Twain National Wildlife Refuge Complex was created in 1958.
Emiquon National Wildlife Refuge was created in 2000.
Matlacha Pass National Wildlife Refuge was created on 1908-09-26.
Sherburne Complex Wildlife Management Area - Louisiana - was created in 1986.
Cibola National Wildlife Refuge was created in 1964.
Currituck National Wildlife Refuge was created in 1984.
National Wildlife Crime Unit was created in 2006.