Hi Ms. Cutler,Hope this helps.I've added him to Find A Grave.
Web: BillionGraves.com Burial Index about Lewis C 'jack' Hart Name: Lewis C 'Jack' Hart Birth Date: 26 Apr 1925 Age at Death: 76 Death Date: 13 May 2001 Cemetery: Buhl Cemetery - which appears to be the West End Cemetery now. Burial Place: Buhl, Twin Falls, Idaho, United States
Buhl Cemetery See: West End Cemetery Buhl Twin Falls County Idaho USA
Mormon Genealogy site has a Louis Calvin Hart in Twin Falls divorced from Elizabeth Lucille HartApril 8, 1949.
And this site may help you even though they stated his birth year is 1926.Do a "Find" for Lewis Calvin Hart and it should take you right to him.