5 Minute Global Land and Seafloor Elevations: Hamilton Exploration

The following text was abstracted from Bruce Gittings' Digital Elevation Data Catalogue: 'http://www.geo.ed.ac.uk/home/ded.html'. The catalogue is a comprehensive source of information on digital elevation data and should be retrieved in its entirity for additional information. Global land and seafloor elevations exist... in ASCII on IBM-formatted floppy disk as a 5 degree quad at 5 arc second resolution for $75 or a one degree quad at 12 arc second resolution for $195 (designate the SW corner of the required quad in each case). Data may be redistributed for non commercial purposes only. The following data are available for each USGS 7.5' quadrangle. Data is arranged and sold by layers. Files are in AutoCAD format. Data is under copyright. Basic roads.............. $80 Enhanced roads.......... $100 Double line roads....... $150 Geographic names......... $40 County Lines............. $80 Township Range and Section Lines... $80 Contours................ $160 Terrain Relief Grid..... $160 Quicksurf Compatible x,y,z ascii... $160