+DukeOfURL01 2 Posted May 8, 2012 I know that USGS marks are not online for some reason. I don't remember where I heard it, but I found information for finding out about the USGS marks. Eastern: USGS in Rola MO 573-308-3500 mcmcesic@usgs.gov Western: USGS in Denver 303-202-4400 infoservices@usgs.gov Quote Share this post Link to post
+EdrickV 3 Posted May 8, 2012 (edited) There was an interesting thread on this subject a while ago. http://forums.Groundspeak.com/GC/index.php?showtopic=172194 Some USGS markers are in the NGS database, but not all of them and they have never tried to digitize their database. Edited May 8, 2012 by EdrickV Quote Share this post Link to post