Louis Adolphus Duhring

After a stint with the 32nd Regiment of Pennsylvania Volunteers in the American Civil War, Duhring enrolled at Penn's Medical School, graduating in 1867.

During his time in medical school, he became a lecturer of dermatological diseases in 1865 at the University of Pennsylvania.

From 1868 he continued his studies in Vienna, Paris and London, returning to Philadelphia in 1870, where he established the Dispensary for Skin Diseases.

In the meantime he became a visiting dermatologist at the department of skin diseases at Blockley Hospital (1876-1887).

The latter book established Duhring as a top authority in American dermatology.