Photograph of William G. MacCallum of the Pathology Staff at Hopkins. He is sitting down with his hands resting on a desk. Facsimile signature.
Publisher: New York: Doris Ulmann.
Photograph of William H. Welch. Note on verso indicates that photograph was taken by W. G. McCallum. Presentation inscription: “With grandfatherly regards to Dr. Forbus, William H. Welch.”
Sudhoff and Welch facing each other, with a pillar and a stone wall in the background, Sudhoff is holding a drinking glass. Text: "Prof. Karl Sudhoff and Dr. William H. Welch at a convention in Bad Homburg, Germany, in 1927. Courtesy of Dr. Arnold...