I use Microsoft ENCARTA to plot events. It is on a CD-Rom. I have my own hand 
held GPS system.

George Erich
Geophysical Exploration Consultant
P. O. Box 2011, Norwalk, CA 90651, U. S. A
Phone (562) 868-6013
e-mail GeE777@.......
33 53.90N
118 04.53W
http://hometown.aol.com/gee777/myhomepage/profile.html
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