Shudg51,
I just want to be sure you realize that your questions are being answered by Kent Johns, himself, THE knowledge source for Springfield information!
Bill Paton
That's way overstated by light years, but I appreciate it.
There are some great sources on Springfield Armory available. Both George Moller and Pete Schmidt authored comprehensive books, which are still available, containing a wealth of info on Springfield, and U.S. and state arms contractors. I would recommend both George's and Pete's books for anyone wishing a deep dive into Springfield. Also, Norm Flayderman's books as well.
My book and articles focus on a small part of Springfield Armory's history, 1795 to 1844, which was the flintlock era.
Henry Osborne and his "SPRINGFIELD" marked muskets have been a problem for many years for those collectors new to the field, especially if they want muskets produced by Springfield Armory. Anyone that wants to begin collecting early Springfield Armory muskets should read the research before laying out cash. I wish that I had had Norm Flayderman's book, first published in 1977, as it would have saved me some heartache.