I have a Bill Large barrel that I used to build a Hawken in 1983. It's .54 cal, 36" long with 1 1/8" to 1" taper with a left-hand breech plug & percussion nipple "snail" & tang. It is marked "W. M. Large" in a crescent, then "JJJJ" in a flat line under the crescent, then a single "L" under the "JJJJ" line. I saw Mr. Large's name in John Baird's book, found his phone number using directory assistance (no internet back then), and called the number. Mr. Large answered the phone, we discussed what I wanted, and I sent him a check. A nice barrel that I still love to shoot arrived shortly thereafter. I figured Mr. Large must be a fairly good barrel maker if he was listed in Mr. Baird's book, but I had no idea how highly esteemed he was until reading this forum!