The Astrogeology RPIF maintains and distributes a stock of some 60,000 lunar and planetary maps generated since about 1960. The approximately 900 individual maps published since 1961 in the USGS lunar and planetary I-Map/SIM-map series are listed in an Excel spreadsheet (see link below). Many of these maps are available in hardcopy form at no cost to the requestor. Watch this space for additional map inventories and images.