Eugenics Exhibit 4.5: Efficiency Rate Chart
Efficiency rate chart from the Proceedings of the First National Conference on Race Betterment.
photo credit: Proceedings of the First National Conference on Race Betterment, 1913.
Efficiency rate chart from the Proceedings of the First National Conference on Race Betterment.
photo credit: Proceedings of the First National Conference on Race Betterment, 1913.