Kaiser Wilhelm Institute of Anthropology, Human Heredity, and Eugenics

Adolf Hitler read his two-volume work, Principles of Human Heredity and Race Hygiene (first published in 1921 and co-written by Erwin Baur and Fritz Lenz) while incarcerated in 1923 and used its ideas in Mein Kampf.

[3] He also authored The Rehoboth Bastards and the Problem of Miscegenation among Humans (1913) (German: Die Rehobother Bastards und das Bastardierungsproblem beim Menschen), a field study which provided context for later racial debates, influenced German colonial legislation and provided scientific support for the Nuremberg laws.

He and his team experimented on Romani people and African-Germans, especially those from Namibia, taking blood and measuring skulls to find scientific validation for his theories.

During World War II, the Institute regularly received human body parts, including eyes and skulls, from Nazi party member Karin Magnussen who studied eye colors, and Josef Mengele (at Auschwitz concentration camp) to use in studies intended to prove Nazi racial theories and justify race-related social policies.

After the German capitulation in May 1945, most of the thousands of files and lab material of the Institute were moved to an unknown location or destroyed, and never obtained by the Allies to use as evidence in war crimes trials and to prove or disprove the Nazi racial ideology which had motivated mass genocide in Europe.