Notes:
1930 Census PA, Lancaster Co., Lancaster City, 4th ward, p. 96
McComas, Harry L., head, 36, m. age 26, b. MD/MD/MD chewing gum co
" , Emily B., wife, 34, m age 24, b. PA/PA/PA
Mummaw, Samuel H., roomer, 20, m age 16, b. PA/PA/PA Tobacco packing warehouse
" , Martha, roomer, 23, m. age 19, b. PA/PA/PA, silk winder silk mill
Donnell, Carl F., roomer, 22, m age 22, b. PA/PA/PA Truck driver ice business
" , Henrietta H., roomer, 19, m age 18, b. PA/PA/PA
I believe that Samuel Mumma and Henrietta Donnell are brother and sister.