Jim,
This post (and your e-mail) appeared right before we left for eight days at Friendship, Indiana. I'm just now starting to catch up on a few things. Yes, I do have an interest in Iowa makers, and have a friend, Tom Moore, who is also. We both have a few Iowa guns. Tom and I have talked of publishing somehing on the subject, but it is still just talk at this point. We have both been gathering information for a number of years. It will probably be a "retirement project". The only information I have on Melvin is the same as your's, the 1880 census listing.