Notes:
1910 Census Election District 3, Baltimore, Maryland, USA
George A Mumma, 22, Head, farm laborer working out
Ella B Mumma, 21, Wife
1920 Censuus: Baltimore Ward 13, Baltimore (Independent City), Maryland
StreetRoland Ave
George A Mumma, 32, Head
Ella V Mummam 32, Wife
Lawrence W Heffnerm, 6, Nephew-in-law
1930 Census: Baltimore, Maryland, USA
3520 Roland Ave
George A Muma, 42, Head
Ella V Muma, 42, Wife
Lawrence Heffner, 17, Nephew
Ebert L Heffner, 14, Nephew
1940 Census: Baltimore, Baltimore City, Maryland
3520 Roland Avenue
George A Mumma, 53, Head, machinest
Ella V Mumma, 53, Wife