William L. Du Bois prescription records, MSS 5/001, Volume: 1; Volume: 2. Historical Medical Library of The College of Physicians of Philadelphia.
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William L. Du Bois prescription records, MSS 5/001, Volume: 1; Volume: 2. Historical Medical Library of The College of Physicians of Philadelphia. http://localhost:8081/repositories/2/resources/1328 Accessed August 03, 2026.