There are some ways to publish on your own. I don't have any links to them, but I'm sure you can google it. You could also donate a copy of the article to some genealogical societies (if you want some exposure to your writing).
I can offer to publish the article on my genealogy website as additional resources for my visitors. Or provide a link to it once you're published online somewhere. Or a link to a purchase page.
I wish I had some of those self-publishing links handy.
I hope I've given you a few ideas. Please post any updates to your findings. Others may want to know the same information. Good Luck!!