[GRASSLIST:4438] Spearfish DRGs available as Free data

[Markus Neteler]

...finally:
Spearfish DRGs available as Free data. Otto Dassau/GDF Hannover
has merged and reprojected the "Spearfish" and "Deadwood North"
DRGs into a single GeoTIFF with NAD27/UTM projection.

Get it here:
 http://grass.itc.it/data.html
 ->  DRGs: Related South Dakota topo sheets from SDGS,
     GeoTIFF, NAD27, 4.7MB

I have included the letter (email) stating that this
file may be freely distributed.

Cheers

 Markus