David DeLancey Condon (1907-1993) was an American naturalist, botanist, and photographer best known for his long association with the National Park Service, particularly in Yellowstone National Park. Born in Covina, California, he studied botany at Brigham Young University before pursuing a career devoted to documenting and interpreting the natural world. Condon worked for many years in Yellowstone, where his photography and educational work helped promote appreciation for the park’s landscapes, wildlife, and ecology. Widely respected as both a scientist and visual storyteller, he created images and writings that contributed to public understanding of the American West and the national parks. He remained active in conservation and natural history throughout his life until his death in 1993.