John C. Otto essay on food allergies and poisoning, MSS 2/235, Folder: 1. Historical Medical Library of The College of Physicians of Philadelphia.
Cite Item Description
John C. Otto essay on food allergies and poisoning, MSS 2/235, Folder: 1. Historical Medical Library of The College of Physicians of Philadelphia. http://localhost:8081/repositories/2/resources/968 Accessed July 22, 2026.