In one of many pieces of autobiographical writing, William Henry III (1794-1878) writes:
"On the 10th of June 1807 I was taken from...school to learn the Gunsmith trade & work in the old factory & on the farm near my home, and for several months struck & blowed the bellows for Samuel Snyder--a locksmith, a test that required all the muscular strength I was master of, next followed the making of ramrod ferrills, wooden ramrods, triggers, side plates, bridgepins, screws of various kinds at the vize and then the filing of Rifle mountings, sword hilts and the like work, until the beginning of October 1810 when my brother Joseph requested my removal to Philadelphia where I forthwith commenced lock making under the instruction of David Maston, a master lockfiler and English workman. I acquired sufficient practical knowledge in about 3 months to pass my locks, both musket & Rifle, by the then U States Inspector Wm. Wickham. I boarded in my brother Joseph's family in Tamany near Kunkle Street. The factory was situated at the N West corner of Third and Noble Street, where Joseph had about 50 men employed in making Muskets, Rifles, and Swords."
This document, as well as many related ones, are held by Jacobsburg Historical Society in Boulton, Pa.