> > Which USGS Quad Sheets are covered in the practice data spearfish? > Deadwood North and Spearfish quads. -- Malcolm D. Williamson - Research Assistant E-mail: malcolm at cast.uark.edu Center for Advanced Spatial Technologies Telephone: (501) 575-6159 Ozark Rm. 12 Fax: (501) 575-3846 University of Arkansas Fayetteville, AR 72701