Photograph of (right to left) James F. Ballard, Director, Boston Medical Library with Robert M. Stecher, Director, Cleveland Medical Library and Assistant Professor of Medicine, Western Reserve University. Photographed by Charles Meyer.
Portrait of Karl Harko von Noorden. The number "1609" appears in the bottom right hand corner of the sheet. Facsimile signature: "Carl von Noorden."
Publisher: Berlin-Charlottenburg: Adolf Eckstein's Verlag.
Photograph of August Krogh, who showed that blood capacity for oxygen is influenced by carbon dioxide tension. Krogh was awarded the Nobel Prize in Physiology and Medicine in 1920.