The book is called the "Ancestry of Etta Double Sowers, wife of Charles E. McKay."I compiled two copies of the same information with some additional information in the 1990 & 1991
You can find the call number under L.D.S. fiche for their collection by surname of family histories---Sowers. Or you can find my works that they by me under authors fiche.
Check their site on line www.familysearch.org
The libraries at any branch library should be able to help you.
Also check my cousin Michael L. McKay's web site www.geocities.com/Heartland/Park/8030
He has information posted on his site about the Sowers & Kerfoot families. He has a new search engine on his "Discussion Forum". He has also posted on his site copies of Sowers wills. He has linksto a major Kerfoot web site. Believe an entire Kerfoot book posted on this site.