[2] In 1915, he built a summer resort on the property, the Powam Lodge, designed by noted architect Emmor Brook Weaver.

[4] Davis collected for the Heye Foundation from 1917 to 1930, focusing on artifacts of the Indian tribes of San Diego County/Southern California, Arizona, New Mexico, and northwestern Mexico, including the Paipai, Kiliwa, Cora, Huichol, Opata, Mayo, Seri, Apache, Cocopa, Tohono O’odham, Papago, Maricopa, Mojave, Hualapai, Yaqui, and Yuma Indians.

[2] In addition to collecting, Davis photographed Indian communities, documenting their daily and ceremonial activities and publishing his experiences in both popular magazines and scholarly journals.

The National Museum of the American Indian houses a large number of objects Davis collected during his years in the Southwest.

The San Diego History Center (SDHC) houses the Edward H. Davis Collection of Indian Photographs and Drawings (5000 images, most dating from 1903 to 1947);.