Original Title: 'Canals in the United States about 1825', the map is historically inaccurate, as some parts depicted were not yet built in 1825, although were proposed and funded by the Pennsylvania Legislature as the <a href="https://en.wikipedia.org/wiki/Main_Line_of_Public_Works" class="extiw" title="w:Main Line of Public Works">Main Line of Public Works</a> act of 1824. <br>•  Specifically, the <a href="https://en.wikipedia.org/wiki/Allegheny_Portage_Railroad" class="extiw" title="w:Allegheny Portage Railroad">Allegheny Portage Railroad</a> across the <a href="https://en.wikipedia.org/wiki/Allegheny_Ridge" class="extiw" title="w:Allegheny Ridge">Allegheny Ridge</a> into Western Pennsylvania would not be begun before 1831 nor completed until 1834. <br>•  The depiction of those proposed canals and navigations may be the source material of this map. The <a href="https://en.wikipedia.org/wiki/Schuylkill_Canal" class="extiw" title="w:Schuylkill Canal">Schuylkill Canal</a> was indeed completed in this year, AND 1824 was the start of making the 1818 <a href="https://en.wikipedia.org/wiki/Lehigh_Canal" class="extiw" title="w:Lehigh Canal">Lehigh Canal</a> navigations a two way canal.
Allen Johnson
1915
Johnson, Allen (1915). Union and Democracy. Cambridge, Massachusetts: Houghton Mifflin Company.