Most US county recorder’s offices have a “miscellaneous” record where a variety of documents have been officially recorded. Usually what is in those volumes can vary, but I’ve seen copies of out-of-state divorce decrees, out-of-county death certificates, medical licenses, etc. It may be worth a look to see what is available.
And while you are there don’t forget to ask about soldier’s discharge records. Many counties made official record copies of soldier’s discharge paperwork in case the soldier ever lost his papers.