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Link doesn't work, looking for exact same help the first guy was. I have a map i downloaded from here http://ngmdb.usgs.gov/maps/topoview/viewer/#4/40.00/-107.51 and autocad does not understand the projection it is in, however if I try to bring in the image in ESRI arcmap it says the projection is GCS_North_american_1927. What do I set cooridante system to in autocad map?
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