River Of Doubt

Map of the Roosevelt-Rondon Scientific Expedition

Theodore Roosevelt pointing at the area explored

Theodore Roosevelt arriving in NYC from Brazil on

Theodore Roosevelt arrived in NYC from Brazil on

Colonel Rondon, third from left, and expedition

The Roosevelt-Rondon Expeditions 15 Brazilian porters

Theodore Roosevelt (right) in a heavily loaded dugout

Colonels Roosevelt and Rondon with bush deer they

Roosevelt-Rondon Expedition encounters friendly

Theodore Roosevelt did his writing in a head net

Theodore Roosevelt and others of the Roosevelt-Rondon

Canoe rigged with a cover under which sick Colonel