Conant, Jennet (2002). Tuxedo Park. Simon & Schuster. ISBN978-0-684-87288-9. Tuxedo Park.- See pages 1 – 3 for William Theodore Richards and page 126 for Greenough Thayer Richards.
Forbes, George Shannon (1932). "Investigations of Atomic Weights by Theodore William Richards". Journal of Chemical Education9 (3): 453–458. doi:10.1021/ed009p452. Bibcode: 1932JChEd...9..452F.
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Forbes, George Shannon (1932). "Investigations of Atomic Weights by Theodore William Richards". Journal of Chemical Education9 (3): 453–458. doi:10.1021/ed009p452. Bibcode: 1932JChEd...9..452F.