Lehman, Jacob S. [compiler]. Christianity Defined: A Manual of the New Testament Teaching on the Unity of the Church, Nonresistance of Evil, Nonconformity to the World in Deportment and Dress, The Proper Observance of the Ordinances, Separation From All Unfaithful Worship; Dissertation on Marriage, The Millennium, and Beneficiary Organizations. Lancaster, Pa.: Reformed Mennonite Church, (1958). First Edition. 
Brown textured cloth with bright gilt titles, 7 3/4 x 5 1/2 inches, 352 clean pp., tight. Tiny nick in the edge of the fore-edge on a few pp. Very good. Hardcover.
"This work is a compilation, from different authors, by Jacob S. Lehman, who rendered valuable assistance in the work by deacon Abraham Lehman. Much of the matter was extracted from the writings of Daniel Musser, John Kohr, Eli Herr, and from former writings of Jacob S. Lehman." - Introduction.
The Reformed Mennonites were originally called Herrites or New Mennonites. They split off from the main body of American Mennonites in 1812, following the teachings of John Herr of Lancaster County. He claimed that the main body had left the teachings of Menno Simons, which he sought to revive.