西奥朵．罗斯福与约翰．慕尔于1908年在优胜美地河谷欣赏冰河点风光

出处: Underwood & Underwood. "Theodore Roosevelt and John Muir, Glacier Point, Yosemite Valley, California." 1906. By Popular Demand: Portraits of the Presidents and First Ladies, 1789-Present, Library of Congress.