A couple of more posts have been added.
A short one on Rhodes/Rhoads and Son(s). They were a bit of a mystery, but I think I've solved it.
https://thesteelpen.com/2017/12/12/pen-history-the-1840s-rhodes-rhoads-mystery-transition-to-the-1850s/ And then I start to look at a very fun article from 1857 on how pens are made. I start with a paragraph from the article describing the history of the American pen industry in the 1840's. The first time I read this article, I had no idea what they were talking about. Since doing this research I can now identify pretty much everyone referenced with just a few exceptions. It's interesting to see what an author in 1857 thought about the last decade of American pen manufacturing.
https://thesteelpen.com/2017/12/15/pen-history-up-to-the-1840s-from-the-perspective-of-the-1850s/ This is also a good segue into the next major pen manufacturer I'm going to look at, the Washington Medallion Pen Company. At this point, the 1850's-60's, we start to find the first, major, long-term and, most importantly,
successful American pen manufacturers. We also start to see people coming and going between these major companies, and the vital role imported Birmingham men made in the industry. (Washington Medallion Pen Company, Harrison & Bradford, Esterbrook, Turner & Harrison, Miller Bros. were all founded by or their primary factory managers and tool makers were Birmingham-trained)