Aerial view of Johns Hopkins University's original campus, looking northeast, after the fire at McCoy Hall and Levering Hall.

Aerial view of Johns Hopkins University's original campus, looking east, after the fire at McCoy Hall and Levering Hall.

Aerial view of Johns Hopkins University, looking northwest.

Testing the grasping reflex of an infant. Infant is tossed in air and seen clinging to rod with another person present to catch the infant if the reflex fails.

Testing the grasping reflex of an infant. Infant is tossed in air and seen clinging to rod with another person present to catch the infant if the reflex fails.

Testing the defensive reflexes as he pinches the knee of an infant. Two negatives: first shows Watson pinching knee and second shows the reflex. Testing the grasping reflex of an infant. Infant is tossed in air and seen clinging to rod with another person present to catch the infant if the reflex fails. Testing the Babinski reflex [?]. Includes all four snapshots. pictured individually and in pairs in other negatives.

Candid photograph of Ames and other officials investigating missiles at a French field.

Construction of Gilman Hall, looking northeast.