Henry A. Trebon - line 67
Source - Year: 1900; Census Place: Fairbank, Buchanan, Iowa; Roll: T623; Page: 9B; Enumeration District: 41.
Henry A. Trebon - line 179
Source - Year: 1905; Iowa State Census Collection, 1836-1925; Census Place: Fairbank, Buchanan, Iowa; Roll: IA_77; Image: 4
Henry A. Trebon - line 84
Source - Year: 1910; Census Place: Fairbank, Buchanan, Iowa; Roll: T624_393; Page: 5B; Enumeration District: 0055; Image: 1034; FHL Number: 1374406.
Source - World War I Draft Registration Cards, 1917-1918; Registration Location: Oxford Junction, Jones, Iowa; Roll: 1643120; Draft Board: 0.
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