----------------------------Original message----------------------------
To Judy Geitgey - I saw your inquiry on maps-L about information to convert
earth-centered coordinates to transverse mercator and offer the following
information for your patron.  If your library doesn't have these works, we
could loan them to you through Inter-library loan (our OCLC code is GEM).
 
        Snyder, John P., Map Projections-- A Working Manual, 1987,
                USGS Professional Paper 1395, 383 p.
 
        Snyder, John P., Computer-Assisted Map Projection Research, 1985,
                USGS Bulletin 1629, 157 p.
 
Hope this helps.
                        Mary E. (Betty) Graziani
                        USGS NMD Reference Collection
                        522 National Center
                        Reston, VA  22092
                        [log in to unmask]