Map of heavy rail lines in the western part of the Portland metropolitan area, dated June 27, 1940. The map also shows an interurban line running south from downtown Portland to Jennings Lodge in Clackamas County. Township, range and section lines are on the map, as are the Willamette and Tualatin rivers, and Lake Oswego. Visit City of Portland Archives for more https://efiles.portlandoregon.gov/record/4083131