Notes:
Data source is "The Mumma Family" by Samuel H. Mumma 1962 & Moomaw book 1990
Emmie was only child of Jacob Mumma born to his third wife, Mary Shupp Hertzler
1900 Census, PA, Cumberland Co., Mechanicsburg Burough, ED 16, dwelling 423
Mumma, Mary, head, Feb 1823, 77, widowed, 6 children, 6 living, b: PA/PA/PA
Harnish, J. T., son-in-law, July 1862, 37, married 0 yrs., b: PA/PA/PA, supt ??? wheel
" , Emma, daughter, Sept 1864, 35, married 0 yrs, b: PA/PA/PA
1910 Census, PA, Cumberland Co., Mechanisburg Burough, ED 23, dwelling 29, 24 Locust Street
Harnish, John T., head, 47, m1 10 yrs, b: PA/PA/PA, laborer feed store
" , Emma, wife, 45, m1 10 yrs, 2 children, 1 living, b: PA/PA/PA
" , Jacob M., 4, son, b: PA/PA/PA
1920 Census, PA, Cumberland Co., Mechanicsburg Burough, ED 23, dwelling 160, 24 West Locust Street
Harnish, John T., head, owns, 57, b: PA/PA/PA, labor feed warehouse
" , Emma, wife, 55, b: PA/PA/PA
" , Jacob M., son, 14, single, b: PA/PA/PA
" , Miller, Esther, boarder, 65, widowed, b: PA/PA/PA
1930 Census, PA, Cumberland Co., Mechanicsburg Borough, ED 21-23, dwelling 14, 24 W. Locust Street
Harnish, John T., head, owns, $2500, 67, 1st m: @ age 37, b: PA/PA/PA, laborer department store
" , Emma M., wife, 65, 1st m: @ age 35, b: PA/PA/PA
" , Jacob M., son, 24, single, b: PA/PA/PA