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=== Railroad maps === | === Railroad maps === | ||
These maps indicate preferred routes of travel during an era where the routes changed from one year to the next. These also aid in tracking the possible whereabouts of railroad employees since many railroads merged or changed names. | These maps indicate preferred routes of travel during an era where the routes changed from one year to the next. These also aid in tracking the possible whereabouts of railroad employees since many railroads merged or changed names.<br> | ||
U.S Railroad Maps: https://www.loc.gov/collections/railroad-maps-1828-to-1900/about-this-collection/ | U.S Railroad Maps: https://www.loc.gov/collections/railroad-maps-1828-to-1900/about-this-collection/<br> | ||
European Transportation Maps of the 19th Century:https://www.lib.uchicago.edu/e/collections/maps/eurotransport/ | |||
=== Topographic or geologic maps === | === Topographic or geologic maps === | ||