Just arrived in post yesterday is a copy of American Gun Makers by Gluckman. There is a William Booth listed at 85, S. Front St. Philadelphia Pa. in 1798 and on South Second St. from 1799 until1816 and a further listing at Narberth Pa. Not much in my England books except for a R. Booth listed at Sunderland and Durham. Best I can do at the moment but still looking. Lagopus.....