Bancroft, Hubert Howe; Alfred Bates; Ivan Petroff; William Nemos (1887). History of Alaska: 1730–1885. San Francisco, California: A. L. Bancroft & company. p. 482.
Silverstein, Alvin; Silverstein, Virginia; Silverstein, Robert (1995). The Sea Otter. Brookfield, Connecticut: The Millbrook Press, Inc. ISBN1-56294-418-5. OCLC30436543.
Ogden, Adele (1932). "The Californias in Spain's Pacific Otter Trade, 1775–1795". Pacific Historical Review. 1 (4): 444–469. doi:10.2307/3633113. JSTOR3633113.
Blok, T. (September 1933). "The Russian Colonies in California: A Russian Version". California Historical Quarterly. 12 (3): 189–190. doi:10.2307/25178215. JSTOR25178215.
Ogden, Adele (1932). "The Californias in Spain's Pacific Otter Trade, 1775–1795". Pacific Historical Review. 1 (4): 444–469. doi:10.2307/3633113. JSTOR3633113.
Blok, T. (September 1933). "The Russian Colonies in California: A Russian Version". California Historical Quarterly. 12 (3): 189–190. doi:10.2307/25178215. JSTOR25178215.
Silverstein, Alvin; Silverstein, Virginia; Silverstein, Robert (1995). The Sea Otter. Brookfield, Connecticut: The Millbrook Press, Inc. ISBN1-56294-418-5. OCLC30436543.