Question: Rufus Roy McCain, was a prisoner at Alcatraz who attempted escape in which year, with Henri Young and Arthur Barker, Barker was an American criminal, the son of Ma Barker and a member of the Barker-Karpis gang, founded by his brother Fred Barker and Alvin Karpis?
Sentence (from "Rufus McCain"): Rufus Roy McCain (July 7, 1903 – December 3, 1940) was a prisoner at Alcatraz who attempted escape with Henri Young and Arthur Barker in 1939.
Relevant evidence: Yes