Daniel Rosenberg teaches history and is Director of General Studies in the College of Arts & Sciences, Adelphi University. He is a labor and social historian, the author of several books, and has published in Labor History, The Reference Librarian, Science & Society, and the Long Island Historical Review, among others. He thanks the following for insightful criticisms of various drafts of his article: Les Baltimore, Nora Bonosky, Dominic Cavallo, Cathy Cleaver, Graham Everett, Rudy Fichtenbaum, Marty Haas, Gayle Insler, Wil Milberg, and Jesse Rosenberg.