While New Method rebound worn books and bound magazines, they also started a new type of business in the 1920s. Sibert noticed that children’s books seemed to get especially rough treatment in libraries and the same titles were repeatedly being sent to New Method to be rebound. He realized that efficiency would increase by rebinding several hundred copies of a title at a time, rather than piecemeal as the libraries sent them in. So New Method began prebinding children’s books, which meant purchasing quantities of a title directly from the publisher, binding them using more durable materials and processes, and selling them as new books to libraries.