Northeast: “CHESAPEAKE & OHIO CANAL./ Commenced at Georgetown./ July 4TH 1828./ Chief Engineer / BENJAMIN WRIGHT.”
Northwest: “CHESAPEAKE & OHIO CANAL./ COMPLETED TO CUMBERLAND./ OCTR. 10TH 1850./ CHIEF ENGINEER/ CHARLES B. FISK.”
Southeast: CHESAPEAKE & OHIO CANAL/ COMPANY 1850/ President/ JAMES M. COALE./ Directors / WILLIAM A. BRADLEY,/ HENRY DAINGERFIELD,/ WM. COST JOHNSON,/ JOHN PICKELL,/ GEORGE SCHLEY,/ SAMUEL P. SMITH,/ Clerk/ WALTER S. RINGOL, / Treasurer / LAWRENCE J. BRENGLE.”
Southwest: “MARYLAND STATE AGENTS./ SAMUEL SPRIGG,/ ALLEN B. DAVIS, WM. T. GOLDSBOROUGH, TENCH TILGHMAN, JOHN VAN LEAR.”
^ abcd"Commemorative Obelisk". List of Classified Structures. National Park Service. Archived from the original on September 24, 2015. Retrieved April 8, 2014.