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Posted: Visualizing U.S. expansion through post offices.

submitted by ant

1 decade 2 years 8 months 1 week ago

"This is a visualization of US expansion in North America from 1700 to 1900, seen through changes in the spatial distribution of post offices.

Data from the USPS Postmaster Finder, with lat/long coordinates extracted from placenames through correlation with the USGS Geographic Names Information System.

Better in HD! Made with Processing. More at derekwatkins.wordpress.com/2011/08/06/posted/ "

From http://boingboing.net/2011/08/10/mailifest-destiny-u-s-expansion-visualized-by-post-offices.html ...