USGS Geologic Map: Preston 1x2 Quadrangle, Wyoming, Idaho
Description: Geologic map of the Preston 1 degree by 2 degrees Quadrangle, southeastern Idaho and western Wyoming  
Publisher: U.S. Geological Survey 
Map: I-1127
Print Date: 1983
Scale: 1:250,000
Format: Folded
Media: One-sided paper map with color graphics.