Keywords: 1862 PRO&C.jpg http //upload wikimedia org/wikipedia/commons/thumb/f/f0/1862_PRO 26C jpg/2427px-1862_PRO 26C jpg 25 http //upload wikimedia org/wikipedia/commons/thumb/f/f0/1862_PRO 26C jpg/4853px-1862_PRO 26C jpg 50 PD-old Undated map of the Portland Rutland Oswego and Chicago Railroad drawn on an 1862 Map shewing the several routes proposed for the passage of gunboats to the Lakes via Erie and Oswego Canal; Champlain Canal; Illinois River and Chicago Canal; Wisconsin Green Bay Canal Prepared by S H Sweet Dep State Engr and Surveyor From http //memory loc gov/cgi-bin/query/r ammem/gmd field NUMBER+ band g3711p+cw0033000 Old railroad maps of the United States Portland Rutland Oswego and Chicago Railroad |