----------------------------Original message---------------------------- As an historian and archaeologist, I encourage map libraries to curate their old USGS topo maps. I recognize the difficulty in allocating space to these maps but these older maps are extremely important resources for historical archaeologists. They usually are snapshots of a landscape long since changed. Thanks. William H. Adams P.O. Box 1177 Philomath, OR 97370-1177 USA 503-929-3102 -3264 fax [log in to unmask]