Editing Travilah, Maryland (section)

===Pennyfield Lock House===
The Pennyfield Lock House (Lock #22) is located in the western portion of the Travilah CDP in the [[Chesapeake and Ohio Canal National Historical Park]]. The [[Lock (water navigation)|lock]] house was built around 1830, and its lock was completed around 1831.<ref name="Kelly18">{{harvnb|Kelly|Maryland-National Capital Park and Planning Commission|2011|p=18}}</ref>{{#tag:ref|The Chesapeake and Ohio Canal was necessary because the Potomac River was not navigable by ships/barges at [[Great Falls (Potomac River)|Great Falls]]—"a spectacular series of falls and rapids".<ref name="MDScenicCO">{{cite web
|title=Chesapeake & Ohio Canal
|website= Maryland Department of Commerce
|publisher=Visit Maryland, Maryland Office of Tourism Development
|url=http://guides.milespartnership.com/md/Byways/16/mobile/index.html#p=17
|access-date=2020-03-29}}</ref>|group=Note}} John L. DuFief built a [[Gristmill|mill]] around 1850 on the [[Muddy Branch]], and it had a road that connected to the [[Pennyfield Lock]].<ref name="Kelly12"/> His mill had the capacity to manufacture 10–12,000 barrels of flour per year, and a network of roads grew that enabled farmers to get their crops to the mill and canal.<ref name="Kelly12"/> The DuFief Mill was about {{convert|1.7|mi}} from the Travilah crossroads, and an alternative mill (Glen Mill) was 3.3 miles away.{{#tag:ref|The Glen Mill was built in the early 1800s.<ref name="Kelly224"/> Using today's roads, the driving distance from the intersection of Glen and Travilah roads to the miller's house for the DuFief Mill is {{convert|1.7|mi}} and the distance to Glen Mill is {{convert|3.5|mi}}.<ref name="DistanceDuFiefMill"/><ref name="DistanceGlenMill"/>|group=Note}} The small community of Travilah thrived because of its crossroads location and proximity to the canal.<ref name="ConnectionTOak"/> The canal was completed as far north as [[Cumberland, Maryland]], by 1850 (and never did reach the [[Ohio River]]), and one fourth of its {{convert|185|mi}} are in Montgomery County.<ref name="Kelly18"/> By 1859, about 83 barges per week were using the canal to transport coal, grain, flour, and farm products to Washington and [[Georgetown (Washington, D.C.)|Georgetown]].<ref name="Kelly18"/>