Thanks for the replies! It wasn't as bad as I thought.
Using the Places workspace, this problem exists with only 8 names so I have changed the place name to Mindora, La Crosse County, Wisconsin (as it appears in the Strauss/Kieser Family History Chart Book).
Now I want to change the place name to Mindoro, La Cross County Wisconsin as the preferred fact with a different source (but keeping Mindora as an alternate fact with the Strauss/Kieser Family History Chart Book as the source for that spelling). My question is, what source do I use?
I am unable to find anything that says Mindoro was originally spelled with an a. The only thing I can find is that Mindoro is an unincorporated community in the the town of Farmington in La Crosse County. I could use Wikipedia's entry. Or I could us the US Census Bureau's GNIS vast listing.
Thanks for any suggestions,