----------------------------Original message---------------------------- I attended the International Map Trade Association show here in Denver last week. I went to 2 sessions regarding gov't publications. The first was a gripe session between map dealers and USGS. I learned a thing or two: USGS has assigned ISBNs to ALL its publications (topos, bulletins, professional papers, etc.). If i understood it correctly, USGS will in the next 18 months publish updated copies of the "Catalog of topographic and other published maps"--the brown books. The dealers (and I) were very pleased to hear this. --christopher jj thiry map librarian colorado school of mines [log in to unmask] http://www.mines.edu/library/maproom/