16 Paper, cardboard and goods made from these materials, not included in other classes, namely, stickers, construction paper, cardboard boxes, greeting cards, postcards and greeting cards; printed matter, namely, printed calendars, printed invitations, printed paper signs; bookbinding material; photographs; stationery; adhesives for stationery or household purposes; artists' materials, namely, pens, markers, sketch pads; paint brushes; typewriters and office requisites except furniture, namely, staplers, paper trimmers, rubber bands; printed instructional and teaching material except apparatus in the field of history, geography; plastic materials for packaging not included in other classes being, namely, plastic bags, films, sheets for packaging; printers' type; printing blocks; all of the foregoing not for use in connection with water heating, water heaters or water heating products