Post (and Stage) Roads 1804
By Laura Newman Eckstein
This is a shapefile/geojson for Abraham Bradley's 1804 "'Map of the United States : exhibiting the post-roads, the situations, connexions & distances of the post-offices, stage roads, counties & principal rivers." http://www.loc.gov/item/2003630384/
PLEASE NOTE: That one file contains both post and stage roads, while the other ONLY contains post roads.