The Hoover Archives Soviet Navy photographs collection (Soviet Union. Voenno Morskoǐ Flot Photographs) nearly doubled in size with a new increment from a source in Poland, a former member of the Soviet-led military alliance of the Warsaw Pact. The black-and-white photographs, most from the 1960s and 1970s, cover all the Soviet fleets: Pacific, Northern, Baltic, Black Sea, and the Caspian Flotilla.