Fong, Walter N., “The Chinese Six Companies,” Overland Monthly, May 1894.
Heizer, Robert F. and Almquist, Alan F., The Other Californians, Berkeley, 1971.
Lee, Murray K., In Search of Gold Mountain: A History of the Chinese in San Diego, California, Virginia Beach, 2011; interview.
Porter, Rufina, Memoirs, ms. San Diego History Center; oral history interview, 1936, ms. Spring Valley Historical Society.
Shin-Shan, Henry Tsai, China and the Overseas Chinese in the United States, 1868–1911, Fayetteville, 1983.
Van Meter, James, director and caretaker, Bancroft Ranch Historical Museum, interview.
Webster, Karna, The Hidden Heart: A History of Spring Valley and the Bancroft House, self-published ms., Bancroft House, 1980.
“Chinese Slavery in California, An Outrageous Case,” San Diego Daily Union, April 16, 1872; “Sequel to the Chinese Case,” San Diego Daily Union, April 17, 1872.