Aerial View of Canal Zone Biological Area, 1950s, by Unknown, c. 1950, Smithsonian Archives - History Div, Aerial view of the Barro Colorado Island laboratory of the Canal Zone Biological Area located on Gatun Lake in the Panama Canal watershed in Panama. The CZBA was made part of the Smithsonian in 1946 and later renamed the Smithsonian Tropical Research Institute. This view shows the dock and facilities from Gatun Lake..