Yes ,the Frontier Folk website is still operational, however traffic is slow. Ken does and has produced some 1810-1830ish English Trade knives. I have a few. I think the main difference is that after 1810 the tang is full width vs the earlier knife had a partial width tang and the gap was filled with pitch and brick dust. Also, the later knives were more straight spined vs the classic up-swept blade on the Scalper/Fish knife.