A hippopotamus and his mate line up at tank’s edge at feeding time, March 1957.Photograph
A hippopotamus and his mate line up at tank’s edge at feeding time, March 1957.Photograph by Robert F. Sisson and Donald McBain, National Geographic -- source link
Tumblr Blog : natgeofound.tumblr.com
#natgeo#vintage#sisson#mcbain#history#animals