In a career covering nearly 50 years, she may be best known for her role from 1972 to 1981 as Miss Mamie Baldwin on the family drama The Waltons.

[4][5][6] Kleeb began acting on stage in Portland, Oregon, late in the 1920s, where she attended the Ellison-White Conservatory of Music.

In the 1960–1961 television season, Kleeb appeared as Miss Claridge, a legal secretary, on the sitcom Harrigan and Son.

She appeared in episodes of Dennis the Menace, I Love Lucy, Pete and Gladys, Hennesey, Death Valley Days, Get Smart, The Andy Griffith Show, Green Acres, Bewitched, Gunsmoke (as “Mrs.

Kleeb's first marriage and the birth of a son, Tom Pendergast, caused a hiatus in her career.