Wabash Co. Historical Museum surname files includes a letter written 2 Jan 1959 from Salt Lake City, UT, by a Carol Ohmart who identifies herself as the widow of Thomas Carlyle Ohmart, d. May 1955, s/o Eli Clinton Ohmart, asking for whatever Ohmart information they had on file. The address was c/o Raymond & Merle Ohmart, 653 Marksea Ave., Salt Lake City, UT. (I do not know whether this Raymond Ohmart is Thomas' brother, or a son.)