Kaufman, Charles Fahs, A Genealogy and History of the Kaufman-Coffman Families. York, PA: author, 1940. LHMS CS71.K212 1940. Available at http://books.google.com/books/?id=iBlWAAAAMAAJ. Information from this source tagged as [Ref: KaufmanCF KAUFMAN p[0-9]*].
Sources for birth and parent Information
father:
[Ref: KaufmanCF KAUFMAN p256]
Sources with Information about marriage to George SHELLENBERGER