I know who Mattox is but had not read this article. Yeah, 17th & 18th century guys usually did not sign their work, at least in america. Even Duncan Phyfe, the dominate cabinetmaker in NYC in the early 19th century did not sign his work. These days, the way in which it is determined who built what is, research & CONSTRUCTION DETAILS! Naturally, this is a long slow process and often ends with an "attributed to" situation, not the best but it's all we got!