
Here's a complex question that requires someone to reason about the input, can you answer it?
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?


1939
