----------------------------Original message---------------------------- Two publications are in question. One is the Map Cataloging Manual (30.00 US), a 257 page, tabbed loose-leaf with 1991 the only edition thus far published. The other is G Schedule Classification for Maps (15.00 US). Apparently, the 4th edition (1976) is the latest available. Both may be ordered from: Library of Congress Cataloging Distribution Service Washington, D.C. 20541-5017 phone: 202-707-6100 fax: 202-707-1334 Hope this helps. George Cru LC [log in to unmask]