
Acting
Ruby Keeler, born Ethel Hilda Keeler, (August 25, 1910 – February 28, 1993) was an actress, singer, and dancer most famous for her on-screen coupling with Dick Powell in a string of successful early musicals at Warner Brothers, particularly 42nd Street (1933). From 1928 to 1940, she was married to legendary singer Al Jolson. She retired from show business in the 1940s but made a widely publicized comeback on Broadway in 1971.
Description above from the Wikipedia article Ruby Keeler, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Gene Kelly - An American in Hollywood
as Self (archive footage)

Busby Berkeley: A Journey with a Star
as Self (archive footage)

42nd Street: From Book to Screen to Stage
as Self (archive footage)

Gold Diggers: FDR'S New Deal... Broadway Bound
as Self (archive footage)

Beverly Hills Brats
as Goldie

Happy 100th Birthday, Hollywood
as Self

That's Dancing!
as From '42nd Street' and 'Dames' (archive footage)

Brother, Can You Spare a Dime?
as Self (archive footage)

The Phynx
as Ruby Keeler
Calling All Girls
as Herself (archive footage)