John D. Rockefeller and John D. Rockefeller Jr.

John D. Rockefeller (left), who established the Rockefeller Sanitary Commission in 1909 to seek the cure and prevention of hookworm disease, especially in the Southern states. He is walking with his son, John D. Rockefeller Jr.; circa 1915.

Two white men walking in suits overcoats top hats with canes on sidewalk with pedestrians

Courtesy of Library of Congress Prints and Photographs Division