Harlan D. Unrau
No description specified.
1-4 (4 Records)
Documents
- Historic Structure Report: Historical Data, the Masonry Locks, Chesapeake and Ohio Canal National Historical Park, Maryland / District of Columbia / West Virginia (1978)
- Historic Structure Report: the Catoctin Aqueduct, Historical Data, Chesapeake and Ohio Canal National Historical Park, MD. -D. C. -W. VA. (1976)
- Historic Structure Report: the Monocacy Aqueduct, Historical Data, Chesapeake and Ohio Canal National Historical Park, MD. -D. C. -W. VA. (1976)
- Historic Structure Report: the Seneca Aqueduct, Historical Data, Chesapeake and Ohio Canal National Historical Park, MD. -D. C. -W. VA. (1976)