1932 - 1938

1932:  President Herbert Hoover adds over 300 square miles to the park through a second Grand Canyon National Monument proclamation, Presidential Proclamation 2022, December 22, 1932.

1933:  The first Civilian Conservation Corps (CCC) camp, Company 819, is established at the Grand Canyon. The CCC continued to be a transforming presence at the park until 1942.

1935:  Bright Angel Lodge opens on the South Rim.​

1938:  Professionally-outfitted river trips begin on the Colorado River within Grand Canyon National Park.