ANDREWS, Ralph Warren. Photographers of the Frontier West: Their Lives and Works, 1875 to 1915 [online]. Superior Publishing Company, March 27, 1965. Dostupné online. (anglicky)
SOCIETY, Sons of the American Revolution California. Register of the California Society of the Sons of the American Revolution: Instituted at San Francisco, California, October 22d, 1875 as Sons of Revolutionary Sires [online]. 27. 3. 1901. Dostupné online. (anglicky)
orbiscascade.org
archiveswest.orbiscascade.org
Archives West: Frank H. Nowell photographs, circa 1900-1908 [online]. Dostupné online. (anglicky)
washington.edu
content.lib.washington.edu
Frank H. Nowell Photographs of Alaska, 1901-1909 [online]. [cit. 2020-06-27]. Dostupné online. (anglicky)
washington.edu
Capturing the fair on film: Bromberg's book studies AYPE photography of Frank Nowell October 1, 2009 UW News [online]. Dostupné online. (anglicky)
worldcat.org
Nowell, Frank H. 1864-1950 [WorldCat Identities] [online]. Dostupné online. (anglicky)
