The third stock pictured above in Dave B's post is a J&S Hawken in the museum in Helena, MT where Jim Bridger's rifle is located. I posted other photos of it on this forum. I just checked through Jim Gordon's book "Great Gunmakers for the Early West, Volume III- Western U.S.". Pictured are some of the rifles in his museum in Glorieta, NM.
The first fullstock is brass mounted and has a "Tennessee or straight cheek piece" as Gordon describes it. It has the incised line. It is in the Buffalo Bill Historical Center, which web site you can look up. Second is a J&S fullstock cut to halfstock, same style of incised cheekpiece. JG's collection. Third is a fullstock with barrel markings illegible, incised edge, JG. Fourth is another with illegible barrel markings but "early features", incised line, JG. Fifth is a fullstock S. Hawken, with square cheek piece but no incised line. Similar to the Stith rifle except for the comb nose. JG. Sixth is a S. Hawken fullstock with the square cheek piece, incised. BBHC.
Then there are five "light sporting rifles" First is brass mounted with a beavertail cheekpiece, S. Hawken. JG. Second a brass mounted with square incised cheek piece. JG. Third, ditto. JG. Fourth steel mounted with square cheekpiece, incised. Fifth, S. Hawken, brass mounted, square incised cheekpiece, BBHC.
Then there is a W.S. Hawken halfstock with a patchbox similar to Mariano Medina's, one key, a checkered wrist, and a square cheekpiece incised on the edge. Hey, it is a "Hawken". JG.
Then there is a J.A. Maltby, Galena, ILL halfstock percussion rifle . One key. Spurred trigger guard. Square incised cheekpiece. JG. Not a Hawken, but a plains rifle style.