‘MANSON’ and ‘SHEFFIELD’ were stamped on Bowie knives that have survived from the American Civil War era. Several feature in the study of Civil War knives by Marc Newman (1998)1. Manson Bowies are usually plain spear-points, with occasional acid-etched patriotic slogans. One knife in Newman (and also shown on the website of Ford’s Theater, Washington, DC) is of particular interest, because it was said to have been carried by John Wilkes Booth, when he assassinated P....