----------------------------Original message---------------------------- The U. S. Geological Survey's, National Mapping Division is replacing the "green" State Topographic Map Index booklets with new single sheet Indexes of the States. Copies are being sent out to Depository Libraries as they are completed for each State. The "brown" Catalogs of Published Topographic Maps of the States are to be retained as reference to the maps on the new Indexes, and are to be used to place orders correctly with our Map Distribution Branch, Denver, Colorado. These Catalogs are to be updated later and will be replaced in time. The Depository Libraries will then be sent copy as they become available. Bruce H. USGS/NMD/OIS/BESI/ESIM MS 509 BITNET%"BHUBBARD@USGSRESV"