USGS Geologic Map: Quinn Table, Imlay Quadrangles, South Dakota 

Description: Geologic Map of the Quinn Table SW and parts of the Quinn Table and Imlay Quadrangles, Pennington and Shannon Counties, South Dakota
Publisher: U.S. Geological Survey 
Map: MF-601
Print Date: 1974
Scale: 1:24,000
Format: Folded
Media: Set of two one-sided paper maps.