[2] Littrell exerted a major impact upon the careers of Mirac Creepingbear, Doc Tate Nevaquaya, Merlin Little Thunder, and Virginia Stroud, among others.
[3] In 1947, Littrell was hired by Southwestern Bell in Oklahoma City and met her future husband, Bob McCabe.
She bought paintings primarily from Kiowa and Comanche artists in Apache, Anadarko and Carnegie, and resold their work to businesses and individuals.
Some of the state's most prominent cultural brokers frequented her business, including David and Molly Shi Boren, Drew Edmonson, and Oklahoma Arts Council Director Betty Price.
Littrell was largely responsible for the brief commercial success enjoyed by Mirac Creepingbear prior to his premature death.
In 1990, Congress passed the Indian Arts and Crafts Act which made it a felony for a non-tribal member or designated artisan to identify as a Native American artist.
In Oklahoma, it had additional consequences, particularly for artists who claim descent from but who are not enrolled in the Five Tribes—Cherokee, Chickasaw, Choctaw, Muscogee Creek and Seminole—whose membership is based exclusively upon the Dawes Rolls.