Beloved Crusader: Lawrence F. Flick, Physician - Hardcoverby Ella M. E. Flick (Author) Beloved Crusader: Lawrence F. Flick, Physician is a biography of Lawrence F. Flick, a prominent physician and public health advocate in the late 19th and early 20th centuries. The book is written by Ella M. E. Flick, his daughter, and provides a detailed account of his life and work. Flick was born in 1856 and grew up in Pennsylvania. He studied medicine at the University of Pennsylvania and later became a professor of