My best advice is to find the Mormons.
If you can afford the time and money, go to the Family Library in Salt Lake City that the Latter Day Saints run. It is the Mecca
for people like you and me.
I did that and walked down the aisles looking at books that contained my family information, including some stuff I would have
never found without being- actually being- in all that information.
I feel sure that where ever you are, no matter the town or state, there is a Latter Day Saints Library close by.
Find them and they will help you research.
Good luck.
Linda