Authors: Killeen Hanson, Evgenia Shnayder, John Watson, and Richard White
This georeferenced shapefile reveals the extent of the historic USGS quads Shaping the West researchers have found for California, Nevada, and Utah (and also beginning to touch on Arizona, Wyoming, and Colorado in this latest version). The different colors represent the different scales of USGS quads. The largest rectangles are 60 minute quads and the smallest are 7.5 minute quads.
Station Construction Data, 1850-1900
How to Run a Transcontinental Railroad