Alexander Wienerberger was recruited into the army of the Austro-Hungarian Empire during World War I. In 1915, he was taken prisoner in Russia and ended up staying in the U.S.S.R. until 1934. Later, he worked as a chemical engineer specializing in explosives, and he established chemical factories in the Soviet Union. In 1933, he was assigned as technical director of a synthetic factory in Kharkiv and became witness to the man-made famine orchestrated by the Soviet government, the Holodomor. His photographs -- made with a Leica camera -- are some of about 100 images verified to be authentic portrayals of those harrowing events. The captions are based on the photographer's own notes.