
Acting
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.

One of My Wives Is Missing
as Mrs. Foster

Demon and the Mummy
as Miss Emily Cowles

Crackle of Death
as Emily Cowles

Man on the Outside
as Stella Daniels

My Father's House
as Anna

The Abduction of Saint Anne
as Sister Patrick

Mame
as Cousin Fan

Winter Kill
as Mildred Young

Skyway to Death
as Aunt Louise

Homebodies
as Mrs. Loomis

Ellery Queen
1 ep.

Little House on the Prairie
as Maddie Elder · 1 ep.

Kolchak: The Night Stalker
as Emily Cowles · 4 ep.

Run, Joe, Run
1 ep.

Kojak
as Mrs. Farenkrug · 1 ep.

Emergency!
2 ep.

The Rookies
1 ep.

The Streets of San Francisco
2 ep.

All in the Family
as Jo · 2 ep.

The New Dick Van Dyke Show
as Mrs. Ferguson · 1 ep.