This book relies heavily on the recollections of Bonnie and Gary Lindberg, who are quoted liberally in the text. Many thanks to them, and to Minneapolis attorney Thomas Bauer, who opened some doors that might have remained closed otherwise.
Two books that were referenced in the text, The Irish Game: A True Story of Crime and Art by Matthew Hart and The Rescue Artist: A True Story of Art, Thieves, and the Hunt for a Missing Masterpiece by Edward Dolnick, were informative about the stolen art market and the Irish gangster Martin Cahill, who is discussed in both. Robert K. Wittman’s book, Priceless: How I Went Undercover to Rescue the World’s Stolen Treasures, was especially useful in respect to the recovery of the stolen paintings.
The FBI’s files on its investigation of the theft from Elayne Galleries were invaluable, even the parts that were “redacted.” Minneapolis attorney Joe Friedberg was helpful, and so were many other sources, most named but some who preferred to remain anonymous. Among the latter, the tipster who wouldn’t stop tipping stands out. Thank you, whoever you are.