Notes:
Data source is Douglas Mumma, 2123 Farmington Place, Livermore, CA 94550, email = doug@mumma.org
1930 Census, Van Buren, Montgomery, Ohio
Marshall A Smith, head, 37, 1st m: @ age 31, b: NC/NC/NC, aeronautical engineer
Kathlean M Smith, wife, 35, 1st m: @ age 29, b: OH/OH/OH
Lydia H Mumma, mother-in-law, 68, widowed, b: OH/OH/OH
1940 Census, South Bend, St Joseph, Indiana
976 Riverside Drive
Residence in 1935: South Bend, St Joseph, Indiana
Marshall A Smith, head, 48, b: NC, owner machine factory
Kathleen Smith, wife, 38, b: OH
Kathleen Smith, dau., 8, b: IN
Marshall Smith, son, 5, b: IN
Gertrude Ruhs, 3, housekeeper