USGS Geologic Map: Platte Canyon Quadrangle, Colorado - Soil and Bedrock 

Description: Reconnaissance map showing relative amounts of soil and bedrock in the Platte Canyon Quadrangle, Jefferson County, Colorado
Publisher: U.S. Geological Survey 
Map: MF-803
Print Date: 1976
Scale: 1:24,000
Format: Folded
Media: One-sided paper map.