Notes:
Living with his widowed mother in the 1910 census of Williamstown. Next door is his brother, Earl S.
1920 Census, MO, Lewis Co., Reddish Twp., Williamstown. 3 Jan 1920, ED 61, Sheet 3A, p. 99
Mumma, Elmer R., 34, married, b. MO, Fa: OH, Mo: OH, occ: mechanic in garage
" , Unice, 31, married, b. MO, Fa: OH, Mo: OH
" , Pricilla, 68, mother in law, widow, b. OH, Fa: New Jersey, Mo: OH [error - should say "mother"]
1930: Census, Williamstown, Lewis, Missouri
Street address: Canton-Mangolia State Road
Elmer R Mumma, head, 44, 1st m: @ age 25, b: MO/OH/OH, manager garage
Eunice Mumma, wife, 41, 1st m: @ age 22, b: MO/OH/OH