Sample DRGs for GRASS Workshop MUM3 2005 DRGs of Spearfish and Deadwood North postprocessed for GRASS Spearfish sample dataset (http://grass.itc.it/download/data.php) in order - to match the dataset definitions Spearfish (SD), UTM zone 13N NAD27/Clarke66. Scale: 1:24000 Resolution: 2m Postprocessed by Otto Dassau, GDF Hannover bR Germany, with GRASS (http://grass.itc.it). Permission: See file 'spearfish_drg24_permission.mbox'