Conant, Jennet. Tuxedo Park. Simon & Schuster. 2002. ISBN 978-0-684-87288-9.- See pages 1 – 3 for William Theodore Richards and page 126 for Greenough Thayer Richards.
Forbes, George Shannon. Investigations of Atomic Weights by Theodore William Richards. Journal of Chemical Education. 1932, 9: 453–458. doi:10.1021/ed009p452.