Dorothy F. Regnery (November 23, 1983). "Capitol Extension District / Library and Courts Building, Office Building No. 1, Fountain Plaza". National Park Service. Retrieved November 4, 2016. with photos https://npgallery.nps.gov/NRHP/GetAsset/NRHP/84000944_text
sjlibrary digital collection http://digitalcollections.sjlibrary.org/cdm/search/searchterm/Day,%20William%20Peyton,%20ca.%201886-1966/mode/exact
"California SP Broadway Theater and Commercial District". United States Department of the Interior - National Park Service. May 9, 1979. https://catalog.archives.gov/id/123858983
"California SP Broadway Theater and Commercial District". United States Department of the Interior - National Park Service. May 9, 1979. https://catalog.archives.gov/id/123858983
Dorothy F. Regnery (November 23, 1983). "Capitol Extension District / Library and Courts Building, Office Building No. 1, Fountain Plaza". National Park Service. Retrieved November 4, 2016. with photos https://npgallery.nps.gov/NRHP/GetAsset/NRHP/84000944_text
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP
"National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010. https://npgallery.nps.gov/NRHP