37 BLANK WRITING PAPER, RULED WRITING PAPER, GRAPH PAPER AND ENGINEERING FORM PAPER, DRAWING PAPER, PAPER PADS, PAD HOLDERS, PAPER TABLETS, FILLER SHEETS FOR LOOSE-LEAF BINDERS, INDEX CARDS, NOTEBOOKS, ARTISTS' PAPER TABLETS, BUSINESS RECORD FORMS AND MEMORANDUM FORMS, PAPER-ROLLS FOR CALCULATING MACHINES, BLOTTERS, CALENDAR DESK PADS, RECEIPT BOOKS, TYPEWRITER PAPER, ENVELOPES