1880 US Census, Waterloo, Ward No. 1, County of Black Hawk, State of IA (Series T0 Roll 327 page 577)

America Mullen age 62, widowed, keeping house born in Kentucky; Father Delaware; mother New Jersey

Henry H. Mullen, son Age 29, single Railroad Employee Iowa; Penn; KY;

John W. Mullan, son age 21, single Works in brick yard Iowa; Penn; KY;

Ray M. Davison, grand-son age 10 Attending School; born in IA; father born Unknown; mother born IL;

Martha Virden, mother age 84 widowed Keeping house born N Jersey; N Jersey; N Jersey

1885 Waterloo, Black Hawk County, IA 1885 State Census

Cedar Falls Rd. near Mullan Ave.

Roll IA 1885_149; Line 25; Family No. 261

America Mullan Age 67 (W) Widow Keeping House Born KY

Elizabeth Davison Age 40 (D) Divorced Teacher Born IL

Ray M. Davison Age 14 (S) Single Attending School Born IA

Martha Virden Age 92 (W) Widow Retired Born New Jersey

1900 US CENSUS, Waterloo City, Black Hawk County, IA

Roll T623; page 418; Enumeration District :21

America Mullian Oct/1819, Age 82, widow Born KY

Elizabeth M. Davidson, dtr Dec/1842, Age 57 Born IL

Ray M. Davidson, grandson Mar/1870, Painter Born IA; father born OH; mother born IL

Occupation: Painter

1910 US CENSUS, 1-WD, Waterloo, Black Hawk County, IA

Series T624: Roll 392, Page 50

Ray M. Davison, Head, 40, Married 4 years Born IA; father born UNK; mother born IL; occupation Painter

Germaine, wife 32 (Married 4 years) Born IA; father born MI; mother born Unk

Elizabeth, mother, widow 67 Born IL; father born PA; mother born KY

1925 IOWA State Census on January 1, 1925

Waterloo, Black Hawk County, IA

IA Roll 1925-1606

Ray M. Davison, owns home, free and clear; RE Value $7,500; PP Value $3,000, age 54;

Genevieve Davidson, age 47, born in IA, Father born in MI, mother born in MI

1930 US CENSUS: Black Hawk County, IA; Waterloo City, 1st Ward, April 18, 1930

Roll 643, page 18A

Address: 166 Falls Avenue, Waterloo, IA

Ray M. Davison 60 ;Married at age 36); has radio; born IA, father born US; mother born US; Occupation: House Decorator

Genevieve F Davison, wife, Age 51 born IA; father MI; mother MI