Courtesy the US National Parks Service Full-size image
Courtesy the National Library of Medicine
Full-size image
Courtesy the Legacy Center, Drexel University, College of Medicine
Published in the Pacific Medical Journal 1896
Courtesy the Stanford Medical History Center
Courtesy the San Francisco History Center, San Francisco Public Library
Courtesy the Special Collections & Archives, UC San Diego
Courtesy the Berkeley Public Library
Courtesy the Special Collections and Archives, California Polytechnic State University, San Luis Obispo