A shelf of books in the apartment James “Whitey” Bulger shared with Catherine Greig was full of non-fiction and fiction books about gangsters and crime, topics that federal prosecutors say Bulger, who is charged with murdering 19 people, already knew quite well.

The books included such titles as “American Mafia,” “G-Men and Gangsters,” “Rat Bastards,” “Public Enemies,” “Written with Lead,” and “Where the Money Was,” co-authored by the notorious bank robber Willie Sutton.