Alexander Wetmore Leaning Against an Army Air Force Jeep, by Unknown, March 28, 1948, Smithsonian Archives - History Div, Image of Alexander Wetmore leaning against the side of an Army Air Force jeep. Wetmore is in Rió Las Tablas, near Guararé, Los Santos, Panama. Taken by an unknown photographer of Alexander Wetmore, ornithologist and sixth Secretary of Smithsonian, during an ornithological field trip to Panama..