A TABLE COMPARES A LIST OF TYPEFACE MANUFACTURERS WITH A LIST OF MACHINES UTILIZING EACH DIFFERENT TYPEFACE UNIT SPACING. ALPHABETIC AND NUMERAL SCHEMATICS ARE DEVELOPED TO AID A QUESTIONED DOCUMENT EXAMINER IN ARRANGING HIS EXEMPLAR COLLECTION WITHIN A KEYED REFERENCE TO TYPEFACE DESIGN AND TYPEWRITER MANUFACTURER USAGE OF EACH DESIGN AND TO MAKE A TENTATIVE DETERMINATION OF THE TYPEFACE DESIGN AND KNOWN USAGE FROM AN ADEQUATE TYPEWRITTEN QUESTIONED DOCUMENT. THE SYSTEM IS DESIGNED TO LEAD THE EXAMINER TO THE RIGHT PLACE IN HIS SPECIMEN COLLECTION AND TO PROVIDE THE SIGNIFICANCE OF A MATCH WITH A KNOWN SPECIMEN. MINOR BRANDS HAVE NOT BEEN INCLUDED.