Quad Index
Quad Index
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.
RELATED VISUALIZATIONS:
Population Density in the United States from 1790 to 2000
California Railroad Commission,
Station Construction Data, 1850-1900
Station Construction Data, 1850-1900
The Expansion of the Western Railroad
Extent of Digitized Railroad
Seeing Space in Terms of Track Length and Cost of Shipping
Railroad Repeats: The Alfred A. Hart Photo Project
Per Capita Income in the United States: 1880-1910
The Central Pacific and Transcontinental Eleven Step:
How to Run a Transcontinental Railroad
How to Run a Transcontinental Railroad
Examples of Digitizing Rail from Historic USGS Quads
RELATED PUBLICATIONS:
A Data Model for Spatial History
