Eugene B. Willard, A Standard History of the Hanging Rock Iron Region of Ohio (1916), vol. 1

A county history of the Ohio iron region, read in the archive.org full text for the Hatten research. Among the deaths of 1875 in Jackson County (vol. 1, p. 508): “Dr. Timothy Marvin, born January 6, 1812, who came with his parents to Bloomfield Township in 1819, died May 5, 1875. He read medicine under Dr. Gabriel McNeill of Jefferson, who was a preacher too.” (The OCR of the year of coming is damaged; it reads as 1819.)