THE CATALOGING SYSTEM, DEVELOPED FOR A COLLECTION OF 45,000 REPORTS, IS BASED UPON SIMULTANEOUS PRODUCTION OF MACHINE-READABLE INPUT AND THREE BY FIVE CARDS TO BE USED IN A MANUAL FILE. A FLEXOWRITER WITH AN AUXILIARY PUNCH AND READER IS USED TO PRODUCE THE THREE TO SIXTY CARDS PER DOCUMENT WHICH DESCRIBE IT. PAPER TAPES OF THE UNIT RECORDS, ADDED ENTRIES, AND DESCRIPTORS ARE PRODUCED AS A BY-PRODUCT, AND WILL BE USED FOR COMPUTER INPUT TO PREPARE BOOK CATALOGS OF THE DOCUMENT COLLECTION. IN THE REPORT INSTRUCTIONS ARE GIVEN FOR PREPARING THE CARDS AND TAPES WITH EXAMPLES FOR EACH PART OF THE UNIT RECORD. THE FLEXOWRITER PROGRAM USED IS APPENDED. THIS DOCUMENT IS AVAILABLE AS AD-647-232 FROM THE CLEARINGHOUSE FOR FEDERAL SCIENTIFIC AND TECHNICAL INFORMATION, SPRINGFIELD, VIRGINIA 22151, $3.00 FOR HARD COPY, $0.65 FOR MICROFICHE, 46 PAGES. (AUTHOR/CM)