Staehlin von Storcksburg, Jakob (1709-1785), Pierre-Ludwig Le Roy. An Account of the New Northern Archipelago, Lately Discovered by the Russians in the Seas of Kamtschatka and Anadir. London: C. Heydinger, 1774.
Ennis, R.C.? Album of 180 Original Gelatin Silver Photographs of Dutch Harbor (Unalaska), Sand Point (Popof Island) and Unga Village on Unga Island (a Ghost Town Since 1969), Taken and Collected by an American Resident During WW2. Ca. 1940-1944.