Digitized Geo Map Source
19-Jun-94 15:23:29
Sb: #108196-Digitized Geo Map Source
Fm: Robert C. Seiwert 72567,2527
To: Larry Junda 70714,276
The USGS is the place you want. You'll need to know what quadarangles you need.
Schreiber's Geokit and maybe VistaPro will import this data and create a mesh.
good luck.