Rich and Eric, I think you'll find the updated versions of interest - rifles added to both books, many original rifles now in color, new research and new thinking where available. Many new references for students. You can purchase from several dealers, but Dorothy at Shumway Publisher would sure appreciate sales, as this is a continuation of George's work, and her source of income.
Re this old rifle, the owner thinks - and it appears to be maple with a few curls forward of the lock. Barrel 40 1/2" long, 1 1/4" at breech and .62 bore. Sounds like it was collected recently in Ohio, where it had been for many years. Shelby mentioned an early Schroyer. The stepped furniture shows up on a few Bethlehem rifles and many German arms, but not common here. The furniture and the carving behind cheek are similar to Rifle No 134 in RCA Vol II. This one needs study and discussion. Bob