Results for "National Science Foundation (U.S.)"
National Zoological Park, Hippopotamuses
- Date: Undated
- Creator: Unknown
National Zoological Park, Hippopotamus
- Date: 1937
- Creator: Olmsted, Arthur J
Hippopotamus, Hall of Mammals, National Museum of Natural History
- Date: 1959
- Creator: Unknown
- Creator: Unknown
Nile Hippopotamus "Arusha" and Baby "Susan" at National Zoological Park
- Date: 1976
- Creator: Schroeder, Francine
NZP Hippopotamus
- Date: 1976
- Creator: Schroeder, Francine
- Creator: Schroeder, Francine
Rare, Unusual and Popular Animals of the World, Exhibit
- Date: 1959
- Creator: Unknown
- Creator: Unknown
Taxidermists Mounting Hippopotamus
- Date: 1930s
- Creator: Unknown
- Creator: Unknown
William L. Brown Holding Hippo Model
- Date: 1930s
- Creator: Unknown
- Creator: Unknown
Blank Postcard of a Mother and Baby Hippopotamus
- Date: 1935
- Creator: Curt Teich & Co
- Creator: Curt Teich & Co
