The masonry locks, Chesapeake and Ohio Canal National Historical Park
Subtitle: Maryland, District of Columbia, West Virginia
By: prepared by Harlan D. Unrau.
Contributors: United States. National Park Service. Denver Service Center. Historic Preservation Division.
Publisher: Denver Service Center, Historic Preservation Division, National Park Service, United States Dept. of the Interior
Published: 1978
Place of publication: Denver
Language: eng
Number of pages: 235
Subjects: Locks (Hydraulic engineering) -- Potomac Valley -- History.; Chesapeake and Ohio Canal (Md. and Washington, D.C.) -- History.
Other titles: Chesapeake and Ohio Canal, the masonry locks.
Notes: Bibliography: p. 231-235.
Cover title: Chesapeake and Ohio Canal, the masonry locks.
At head of title: Historic structure report, historical data.