From Wikipedia, the free encyclopedia: Mary Treen (born Mary Louise Summers, March 27, 1907 – July 20, 1989) was an American film and television actress, a familiar face who brought levity to the screen. A minor actress for much of her career, she managed to secure a plain, unassuming niche for herself in the Hollywood of the 1940s, 1950s, and 1960s. Early years She was born in St. Louis, Missouri, the daughter of attorney Don. C. Summers and actress Helene Sullivan Summers. In 1908, when Mary Louise was 11 months old, her mother sued her father for divorce on the grounds that he failed to provide for her. Her father died while she was an infant. She was reared in California by her mother and her stepfather, a physician. Treen attended the Westlake School for Girls and a convent where she tried out successfully in school plays. Career During her career, Treen was seen in over 40 films. Among her film roles were Tilly, the secretary of the Building and Loan, in It's a Wonderful L...
Mr. Dodd Takes the Air
1937
It's a Wonderful Life
1946
Wait Till Your Mother Gets Home
1983
Happiness Ahead
1934
From This Day Forward
1946
Colleen
1936
God's Country and the Woman
1937
Young Fugitives
1938
The Birds and the Bees
1956
Calling Homicide
1956
Talent Scout
1937
A Day at Santa Anita
1937
Change of Heart
1938
Three Smart Girls Grow Up
1939
Babbitt
1934
Shipmates Forever
1935
Jailbreak
1936
High Powered
1945
Broadway Hostess
1935
Rodeo Dough
1940
Broadway Gondolier
1935
Missing Witnesses
1937
Paradise, Hawaiian Style
1966
Murder by an Aristocrat
1936
The Murder of Dr. Harrigan
1936
Fun in Acapulco
1963
Kitty Foyle
1940
The Great Man's Lady
1941
Career
1959
A Likely Story
1947
Double Alibi
1940
The Captain's Kid
1936
Bachelor in Paradise
1961
The Stooge
1951
Father Takes a Wife
1941
The Case of the Curious Bride
1935
Second Honeymoon
1937
Who's Minding the Store?
1963
Flight for Freedom
1943