Notes:
1910 Census, CO, Denver Co., Denver City, Pct 5, p. 70, ED 89,
Mumma, George A., head, 39, m1, 19 yrs, b: PA/PA/PA, machinest, elevators
" , Anna, wife, 38, m1, 19 yrs, b: PA/PA/PA
" , Albert B., son, 15, single, b: PA/PA/PA
" , Charles W., son, 11, single, b: PA/PA/PA
" , Edward J., son, 7, single, b: PA/PA/PA
1920 Census, CO, Denver Co., Denver City, ED 172, dwelling 174
Mumma, George, head, rents, 47, m:, b: PA/Germany/Germany, machinist, elevator Co.
" , Mary, wife, 36, b: IL/IL/IL
" , Wesley, son, 21, single, b: PA/PA/IL, machinest, Elevator Co.,
" , Eddie, son, 17, single, b: CO/PA/IL, candymaker, confectionary
Haley, Mabel, stepdaughter, 16, single, b: CO/CO/IL, collar Ironer, laundry
Lord, Milton, nephew, 9, single, b: CO/KS/USA
1930 Census, CO, Denver Co., Denver City, ED 16-210, p. 168,
--- 2947 Williams Street, dwelling 4
Mummy, George A., head, owns, $1800, has radio, 44, 1st m @ age 19, b: PA/PA/PA, machinist elevator
" , Mary, wife, 41, 1st m: @ age 16, b: IL/IL/SC
" , George, grandson, 7, single, b: CO/CO/CO
[It is unclear who is the father of George, the grandson - It is probably Edward Mumma listed below and George the grandson was next door with his grandparents when the census was taken]
--- 2943 Williams Street, dwelling 5
Mummy, Edward, head, owns, $1700, has radio, 26, 1st m @ age 17, b: CO/PA/IN, candy maker, candy store
" , Mabel, wife, 26, 1st m @ age 17, b: CO/IL/CO. laundress, laundry
[Note: it is possible that Mabel is Edward's step sister]