Columbia subject headings:
Canals--United States.
Chesapeake and Delaware Canal (Del. and Md.)
Chesapeake and Delaware Canal Company.
Harvard subject headings:
Canals--United States
Chesapeake and Delaware Canal (Del. and Md.)
Chesapeake and Delaware Canal Company
Dismal Swamp Canal (N.C. and Va.)
Dismal Swamp Canal Company
Princeton subject headings:
Canals--United States.
Chesapeake and Delaware Canal (Del. and Md.)
Chesapeake and Delaware Canal Company.