AUTHORS of libdrg

Gregory D. Troxel <gdt@ptt.lexort.com> wrote almost all of the code.

Bill Chiarchiaro assisted with testing and debugging, including
running very crufty early versions.

ACKNOWLEDGEMENTS

Thanks to Tim Shepard for writing and releasing xplot.  Being able to
see topographic maps in xplot was the inspiration for the code that
turned into libdrg.

Thanks to Bill Chiarchiaro, Mark Eichin and shadow for access to DRGs.

Thanks to the USGS for producing topographic maps, and then making
DRGs.
