Anita Loos, in her 1966 autobiography "A Girl Like I," wrote that during her cocaine-induced frenzies, Mabel would write long, rambling letters to people about nothing in particular. At the time of her death, Mabel's attending physician was Loos' brother, Clifford. She begged Clifford to allow her to die at home, but she was too weak to be moved. A portable screen was brought in from her bedroom and, thinking she was in her own bed, she died in peace.
Interred at Calvary Cemetery, in Boyle Heights, California (USA).
Portrayed by Bernadette Peters in the Broadway musical "Mack and Mabel" (1974). Book by Michael Stewart, music and lyrics by Jerry Herman.
Profiled in book "Funny Ladies" by Stephen Silverman. 
She is credited with throwing cinema's first custard pie in the face. The film is A Noise from the Deep (1913) and the victim was Roscoe 'Fatty' Arbuckle.
Writer/Producer Rudy Cecera used some of Mabel's personal possessions as props in his short film Madcap Mabel, which went on to become an Official Selection in four film festivals.