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Roddis, Louis H. (1942-12-01). "William Knickerbocker Van Reypen, Surgeon General, United States Navy (1897–1902)". Military Medicine. 91 (6). Oxford University Press (OUP): 696–699. doi:10.1093/milmed/91.6.696. ISSN0096-6827.
Roddis, Louis H. (1942-12-01). "William Knickerbocker Van Reypen, Surgeon General, United States Navy (1897–1902)". Military Medicine. 91 (6). Oxford University Press (OUP): 696–699. doi:10.1093/milmed/91.6.696. ISSN0096-6827.