Diehl, M[ichael]. Biography of Rev. Ezra Keller, D.D., Founder and First President of Wittenberg College. Springfield, Ohio: 1859. First Edition.
Flory, Rolland F. Lest We Forget and Tales of Yester-Years, Vols. 1 & 2 Self published, Springfield, OH, 1974. First Edition. Signed by Author.
Versteeg, John M. Methodism: Ohio Area (1812-1962). Ohio Area Sequicentennial Committee, n.p., 1962. Signed by Author.
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