----------------------------Original message---------------------------- On Date: Thu, Feb 29, 1996 Arlyn Sherwood asked: > I just found out that New York publishes its own series of topos. Does > any other state do their own topo series? I don't mean just sell the > USGS topos. The patron I think was interested in good old paper copy, > but I imagine the inquiry should include digital as well. The maps you refer to are NYS Dept. of Transportation 7.5 minute quads, prepared in cooperation with the Federal Highway Admin., whether or not any other state provides similar material, I don't know - although the State of Maryland produced large scale county maps with topographic information incorporated. These maps were updated with each census as I recall and were used to establish voting precinct boundaries, etc. They were very good quality. I too would be interested if other states have similar materials, in particular North Carolina and Florida. There are a couple of things to note about the NYSDOT mapping. The 1000 meter ticks are based on the NY Transverse mercator grid, and the 10,000 ft ticks on the NY State Plane Coordinate Grid. Generally the features and cultural details on these maps are up-dated at more frequent intervals, but the topo map base is from the most recent USGS. As a example, I'm reading from a silver - mylar for the Delevan Quadrangle Second Edition dated 1975. The map base is from USGS 1963,and the revisions made from 1974 aerial photography. The map is noted as: Special Topographic Edition Contours, at 20-foot intervals, shown unrevised from 1963 US Geological Survey map. There is and additional discaimer in the annotation: "Revisions may not comply with National Map Accuracy Standards" All in all the quality of these maps I find very good. They are however slightly more expensive. In the hope that this information may prove useful to someone other than me. . . . . - Andrew H. Auld; Lockport NY =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= I am a Bear of Very Little Brain, and long words Bother me. - Pooh =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=