1910 Census, Altoona City, Ward 8, Blair County, Pa.
524 Bell Avenue
Max Grathwohl, Head, Married x 1 25 yrs., Laborer Round House, b Ger, Immig 1883
Josephine, Wife, 54, 3 children/3 living, b Ger, Immig 1881
Anna, Dau, 25, b Pa.
Hattie, 22, Laundress, b Pa.
Charles, 19, Son, Tinner, b Pa.

In the 1920 Census, Hettie A. Grathwohl, 28, Trained Nurse, b Pa., parents b Germany, was among other nurses who lodged at the residence of home of Frank and Lida McMasters at 4614 Friendship Ave., Allegheny County, Pa.

At the time of the 1930 Census of Allegheny County, Hettie Grathwohl, 37, Hospital Nurse, resided on Main Street, Pittsburgh City, Ward 9, in the home of John Schreiber.