More by Gerard Helferich
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Theodore Roosevelt and the Assassin: Madness, Vengeance, and the Campaign of 1912
Theodore Roosevelt and the Assassin: Madness, Vengeance, And The Campaign Of 1912
Humboldt's Cosmos: Alexander von Humboldt and the Latin American Journey that Changed the Way We See the World
Stone of Kings: In Search of the Lost Jade of the Maya