Daniel Ray Hull

Hull was one of four students who studied intensively with civic planner Charles Mulford Robinson, who had published numerous texts on city planning.

The largest project in the Park Service at the time was the re-planning of the Yosemite Valley, and Hull moved there to oversee the work, assisted by a friend from his studies at the University of Illinois, Paul P. Keissig.

[6] Hull's plans for Yosemite embodied the informal, natural principals promulgated by Frederick Law Olmsted Jr.

In addition to master planning, Hull worked on specific projects such as the administrative district at Mesa Verde and the Ash Mountain headquarters complex at Sequoia.

[3][7] At a smaller scale, Hull directed design efforts on new administrative structures at the Giant Forest in Sequoia, using local materials such as rubble stone, logs and wood shingles to achieve an intentionally rustic look, a style that quickly evolved into the National Park Service Rustic style.

[7] Hull is specifically credited as architect on a number of buildings, indicating his versatility and technical ability.

[14] Hull was also responsible for a number of buildings and landscape planning projects in Yellowstone, Glacier, Mount Rainier, Sequoia, Carlsbad Caverns, Rocky Mountain and Mesa Verde National Parks.