I have never seen Mansura, Avoyelles Parish, Louisiana, well-represented on any map prior to satellite data. But we can figure out why...

In August of 1859, surveyors marked the 100th Meridian at the Red River - the line that marks the eastern boundary of the Texas panhandle...

According to this map filed by the Houston & Texas Railroad with the Texas General Land Office, their rail line was proposed to extend to...