Teddy Roosevelt's Perilous Expedition on the

The dangerous—yet victorious—trip wouldn’t have been possible without Cândido Rondon, an icon of Brazilian history

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Teddy Roosevelt's Perilous Expedition on the , History

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The Perilous Adventures of the Cowboy King: A Novel of Teddy Roosevelt and His Times - Magic of History

River of Doubt by Martin Copeland

Timeline, The Roosevelts: An Intimate History, Ken Burns

Three Surveyors and That Other Guy — Berntsen International

Through the Brazilian wilderness

Teddy Roosevelt's Perilous Expedition on the , History

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The River of Doubt : Theodore Roosevelt's Darkest Journey by Candice Millard (2006, Trade Paperback) for sale online