Keywords: Stop Gate on CandO Canal near Ft Fredrick From NPS.jpg en Stop gate at Fort Fredrick before Big Pool at 112 40 miles National Park Service http //www hscl cr nps gov/insidenps/report asp STATE PARK CHOH STRUCTURE SORT RECORDNO 721 National Park Service Dept of Interior US Government Chesapeake Ohio Canal National Historical Park PD-USGov |