Lake stage, 10,000 years ago, as portrayed in the sixth of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
Last glacial stage, 20,000 years ago, as portrayed in the fifth of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
First glacial stage, 2 million years ago, as portrayed in the fourth of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
Canyon stage, 10 to 2 million years ago, as portrayed in the third of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
Mountain valley stage, 10 million years ago, as portrayed in the second of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
Broad valley stage, 15 million years ago, as portrayed in the first of six paintings by H. A. Collins, Sr., depicting geologic stages in the carving of Yosemite Valley.
Nine park rangers called the "First Rangers" of Yosemite National Park, shown mounted on horses lined up in meadow in Yosemite Valley, 1915; with Yosemite Falls in distance, and dog in foreground. Left to right, Oliver Prien, Chief Ranger; Charles…
About forty members of U.S. 6th Cavalry, Troop F, shown mounted on, or standing beside their horses, and lined up atop and beside the Fallen Monarch tree in the Mariposa Grove of Giant Sequoias, Yosemite, 1899.