This collection provides images of, and information about, all of the extant printer's marks in the windows of the Vassar College Library. Printer's marks are visual emblems that identify the printer of a particular book. They first appeared in the 15th century, and helped early printers establish their businesses and protect their work in what was still an emerging and precarious field. They also have an artistic quality, and many make use of elaborate symbols and patterns. Users will find images of the marks, brief biographies of the printers, and short descriptions of the marks. They can be searched by name, location of printer, or location in the library. This project was created by Katherine Durr (VC '15) as part of the Ford Scholar program under the supervision of Professor Ron Patkus in Summer 2013.