[1] In 1819, he was arrested, charged, and found guilty of multiple counts of body snatching in Ipswich.
[citation needed] Forced to leave the state, he moved to Washington, D.C. around 1820 to re-establish his career.
[2] In 1821, Sewall was appointed a professor of anatomy and physiology, as well as doctor at Columbian College (which later became George Washington University).
[2] In May 1841, Sewall was appointed by President John Tyler as inspector of the Penitentiary in Washington, D.C.[3] Sewell is remembered today for his eight graphic drawings of "alcohol diseased stomachs".
Colored lithographs of these were made and widely distributed to promote teetotalism and the temperance movement.