[LETTERING GUIDES AND FOR MATERIALS] USED IN LITHOGRAPHIC PRINTING-NAMELY, PAPERLITHOOGRAPHIC MASTER SHEETS,[CRAYONS,PENCILS] ERASERS, MASKING PAPER, AND [ADAPTERS IN THE FORM OF SHEETS OF PAPER GUMMED ON ONE SIDE FOR CONVERTING A PAPER LITHOGRAPHIC PLATE FROM ONE TYPE OF MOUNTING TO ANOTHER REINFORCEMENT SHEETS FOR] [ LITHOGRAPHIC PLATES IN THE FORM OF SHEETS OF PAPER GUMMED ON ONE SIDE]