Chaim M. Rosenberg is the author of The Great Workshop: Boston�s Victorian Age, and Goods for Sale: Products and Advertising in the Massachusetts Industrial Age. His collection of ...view moreChaim M. Rosenberg is the author of The Great Workshop: Boston�s Victorian Age, and Goods for Sale: Products and Advertising in the Massachusetts Industrial Age. His collection of colorful trade cards and catalogs from the Fair form the heart of America at the Fair.view less