William S. (William Samuel) Sadler

Born in Indiana in 1875, William Samuel Sadler built a varied career as an American surgeon, psychiatrist, lecturer, and author. As a young man he worked at the Battle Creek Sanitarium, where he came under the influence of John Harvey Kellogg, and he went on to write widely on health, psychology, religion, and social questions.

Sadler is often remembered today for his connection to The Urantia Book. Reliable biographical sources describe him as one of the figures involved in bringing the book to publication, linking his name to a movement that blended spiritual claims with organized study and discussion.

He died in 1969, after a long public life that left a mark in both medical and religious circles. His story stands out because it spans practical medicine, popular education, and a controversial spiritual legacy that still attracts interest.