Her well-known films included "The Tender Trap" and "High Society" but others were less memorable. "I made two movies I've never even seen," she told an interviewer in 1991.
She attributed her drive to do charity work to her grandparents and parents who "were always volunteers in every direction."
She said she learned first-hand the power of empathy in 1943 when she performed in a ward of mental patients and got a big smile from one man she learned later had been uncommunicative for six months.
"I suddenly realized with a great sense of impact how valuable we are to each other," she said.
In 1979, she was knighted by King Olav of Norway.
In her early 70s, an interviewer asked if she had ever thought of retiring. "No. What for?" she replied. "If people retired, we wouldn't have had Laurence Olivier, Ralph Richardson, John Gielgud ... I think it's very important to hang on as long as we can."
In the 1990s, Holm and Gerald McRainey starred in the CBS's "Promised Land," a spinoff of "Touched by an Angel." In 1995, she joined such stars as Tony Randall and Jerry Stiller to lobby for state funding for the arts in Albany, N.Y. Her last big screen role was as Brendan Fraser's grandmother in the romance "Still Breathing."
Holm was married five times and is survived by two sons and three grandchildren. Her marriage in 1938 to director Ralph Nelson lasted a year but produced a son, Theodor Holm Nelson. In 1940, she married Francis Davies, an English auditor. In 1946, she married airline public relations executive A. Schuyler Dunning and they had a son, Daniel Dunning.
During her fourth marriage, to actor Robert Wesley Addy, whom she married in 1966, the two appeared together on stage when they could. In the mid-1960s, when neither had a project going, they put together a two-person show called "Interplay — An Evening of Theater-in-Concert" that toured the United States and was sent abroad by the State Department. Addy died in 1996.
Funeral arrangements for Holm were incomplete. The family is asking that any memorial donations be made to UNICEF, Arts Horizons or The Lillian Booth Actors Home of The Actors Fund in Englewood, N.J.
Associated Press Writer Jennifer Peltz contributed to this report.
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