Authorized reproduction of the users / instruction manual for an unspecified manufacturers, automatic zig-zag, model 305, deluxe sewing machine with a round bobbin. It looks to me like it was made by the White Sewing Machine Company. The manual mentions its attachments, has basic information, cleaning and oiling and some troubleshooting information. The cam based stitches are covered and illustrated. The built in buttonholer is covered, too.