Black and white, mounted print of men sitting in wagon displaying a sign, "Grand Canyon or Bust." The Methodist Church at 2nd Avenue and Washington in Phoenix, Territory of Arizona, stands at right.

Black and white print of man overlooking the canyon, with handwritten annotations and arrows identifying trail sites, " Mi. 38", "Dam Site" and "Mi. 37." Circa 1920-1929.

Black and white print with typescript annotation, "Upstream view of the canyon of Colorado River at the bridge site near Lees Ferry, Arizona." Handwritten annotation, "Exhibit I." Circa 1920-1929.

Black and white print with typescript annotation, "Close up view of Vulcan Throne, Grand Canyon, 89 miles below Bright Angel Creek." Handwritten annotation, "Exhibit IV." Circa 1920-1929.

Black and white print of people riding mules down a trail. Circa 1940-1949.

Press release comparing visitor attendance to the park by year. A 26 percent increase from 1923 to 1924 is noted.

Travel statistics for Grand Canyon National Park.