----------------------------Original message---------------------------- I just sent this reference to Roger, who asked about converting lat/long to various projections. Could somebody at USGS send him ordering information directly, please? I don't guess there's anyplace in Oz that sells USGS Professional Papers, is there? Roger's email is: [log in to unmask] U.S. Geological Survey. Map Projections-A Working Manual. U.S. Geological Survey Professional Paper 1395. Washington, D.C.: U.S. Government Printing Office, 1987. In a related question, is there any machine-readable version of this paper (maybe by chapters) with a separate index? Thanks. virginia \ / Virginia R. Hetrick, here in sunny California O Internet: [log in to unmask] 0o Bellnet: 310.206.7588 (with phonemail)