Believe it or not, one of the ladies who helped me briefly the first day that I visited was a Mrs. Pearce.
In my family, I have a Pearce line that has been totally researched by my Colorado cousin so she was
actually married to a descendant of the same line.
The deal is that in Salt Lake City, you will find so much information including books that are out of print, etc.
You will be amazed at how large the place is.