Alonzo Trebon - line 8
Source - Year: 1920; Census Place: Dubuque Ward 1, Dubuque, Iowa; Roll: T625_488; Page: 6A; Enumeration District: 123; Image: 41.
Alonzo Trebon - line 38
Source - Year: 1925; Iowa State Census Collection, 1836-1925; Census Place: Dubuque Precinct 1, Dubuque, Iowa; Roll: IA1925_1700; Image: 265
Alonzo Trebon - line 38
Source - Year: 1925; Iowa State Census Collection, 1836-1925; Census Place: Dubuque Precinct 1, Dubuque, Iowa; Roll: IA1925_1700; Image: 266