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Acting
Collier's acting career started in 1938, when she had a small but credited role in A Desperate Adventure, starring Ramon Novarro and Marian Marsh. From 1940 through 1949, her career would be active and somewhat successful, with her playing mostly heroine roles in B-movies. During that period, she often starred opposite western stars Bob Steele, Tom Tyler, and Dennis Moore. In 1950, she starred in the sci-fi serial The Flying Disc Man from Mars. Collier was sometimes called the Fourth Mesquiteer because seven of Republic Pictures' The Three Mesquiteers movies featured her as the female lead. Collier played Carol in the soap opera Dear John, which ran on CBS in the 1930s and 1940s. Beginning December 6, 1948, she was featured in You, a program on KMGM in Los Angeles, California. In 1949, Collier co-starred in City Desk, a drama about activity in the newsroom of a newspaper. From 1950 through 1957, she starred mostly on television series episodes. She played Mary, the hero's girlfriend and sidekick, in 58 episodes of the television series Boston Blackie, which ran from 1951 to 1954. She retired from acting after 1957.

Missile Monsters
as Helen

Jungle Safari
as Pamela Courtney

Screen Director's Playhouse
as Lady Elaine

Boston Blackie
as Mary Wesley

Rhythm Inn
as Betty Parker

Flying Disc Man from Mars
as Helen Hall

Dick Tracy
as Fluff

Joe Palooka in Humphrey Takes a Chance
as Anne Howe Palooka

Miss Mink of 1949
as Alice Forrester

Out of the Storm
as Ginny Powell

Arthur Takes Over
as Margaret Bixby

Slave Girl
as Aleta

Wild Beauty
as Linda Gibson

The Cat Creeps
as Gay Elliot

A Night in Casablanca
as Annette

Girl on the Spot
as Kathy Lorenz

The Crimson Canary
as Jean Walker

Penthouse Rhythm
as Linda Reynolds

The Naughty Nineties
as Miss Caroline Jackson

Jungle Queen
as Pamela Courtney

Jungle Woman
as Joan Fletcher

Cobra Woman
as Veeda

Follow the Boys
as Lois Collier (uncredited)
Prices Unlimited

Weird Woman
as Margaret Mercer

Ladies Courageous
as Jill Romilly

She's for Me
as Eileen Crane

Young Ideas
as Co-ed (uncredited)

Get Going
as Doris

Santa Fe Scouts
as Claire Robbins

My Son, The Hero
as Nancy Cavanaugh

The Phantom Plainsmen
as Judy Barrett

Westward Ho
as Anne Henderson

The Affairs of Jimmy Valentine
as Receptionist

Raiders of the Range
as Jean Travers

The Man Who Returned to Life
as Mary Tuller

Blondie Goes to College
as Coed

West of Cimarron
as Doris Conway

Gauchos of El Dorado
as Ellen

Sailors on Leave
as Pretty Brunette (uncredited)

Outlaws of Cherokee Trail
as Doris Sheldon

Ice-Capades
as Audition Girl

Girls of the Road
as Road Girl (Uncredited)