Foi o guardião do Parque Nacional de Yosemite por 21 anos.
Notas e Referências
- Indians of the Yosemite (1904)
- The Big Trees of California (1907)
- "Yosemite: Past and Present," Sunset, April, 1909
- The Yosemite Valley (1910)
- Early Days in Yosemite (1964). Originally published as "A Plea for Yosemite" in Yosemite Nature Notes (February 1927) from a manuscript written c. 1907.
- "Galen Clark" biographical sketch by Mrs. H. J. Taylor (in Yosemite Indians and Other Sketches, 1936)
- Sketch of Galen Clark's life by John Muir (in The Yosemite, 1912)
- Galen Clark's obituary
- Sketch of Galen Clark by W. W. Foote in Indians of the Yosemite (1904)
- Shirley Sargent, Galen Clark: Yosemite Guardian 3d. ed. (1994).