Matthew Black is a labor and crime historian who was recruited by James P. Hoffa's office to author Dave Beck: A Teamster's Life. Black has also worked as a staff writer for The San Diego Union-Tribune and has written articles for Alaska Airlines Magazine. He has published dozens of articles on History101.com, where he has individually brought some 42 million readers to his work. Born and raised in Seattle, he now travels the country and the world at a feverish pace in search of stories. He calls San Diego home, where he lives with his wife and daughters. He is also the author of Operation Underworld: How the Mafia and US Government Teamed Up to Win World War II.