Biography
Ruth McDevitt (September 13, 1895 – May 27, 1976) was an American stage, film, radio and television actress.
Description above from the Wikipedia article Ruth McDevitt, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Cast Credits

Crackle of Death
Character: Emily Cowles
MOVIE • 1976

Demon and the Mummy
Character: Miss Emily Cowles
MOVIE • 1976

One of My Wives Is Missing
Character: Mrs. Foster
MOVIE • 1976

Ellery Queen
Character:
TV • 1975

Man on the Outside
Character: Stella Daniels
MOVIE • 1975

My Father's House
Character: Anna
MOVIE • 1975

The Abduction of Saint Anne
Character: Sister Patrick
MOVIE • 1975

Mixed Company
Character: Miss Bergquist
MOVIE • 1974

Kolchak: The Night Stalker
Character: Elderly Woman
TV • 1974

Kolchak: The Night Stalker
Character: Edith Cowels
TV • 1974

Kolchak: The Night Stalker
Character: Emily Cowles
TV • 1974

Little House on the Prairie
Character:
TV • 1974

Run, Joe, Run
Character:
TV • 1974

Homebodies
Character: Mrs. Loomis
MOVIE • 1974

Winter Kill
Character: Mildred Young
MOVIE • 1974

Mame
Character: Cousin Fan
MOVIE • 1974

Skyway to Death
Character: Aunt Louise
MOVIE • 1974

The Girl Most Likely To...
Character: Housemother
MOVIE • 1973

Kojak
Character: Mrs. Farenkrug
TV • 1973

A Prowler in the Heart
Character: Doreen
MOVIE • 1973