1870 Census, Black Hawk, Black Hawk, Iowa
14 Jun 1870, Series: M593  Roll: 377   Page: 34

Ferris, Charles E., age 23, M, W, Farmer, RE val 2400, pers val 795, b. Indiana
Ferris, Mary, age 20, F, W, Keeping house, b. Pennsylvania
Ferris, Anna, age 11 mo., b. Iowa, b. Jan