Columbia Formation on Potomac Formation, head of Chesapeake Bay. Maryland. No Date.
Summary
Album caption: Columbia Formation on Potomac Formation, White Bluff, head of Chesapeake Bay. Maryland. n.d. Index card: White Bluff, 5 miles south of Havre de Grace.
Summary
Album caption: Columbia Formation on Potomac Formation, White Bluff, head of Chesapeake Bay. Maryland. n.d.
Index card: White Bluff, 5 miles south of Havre de Grace.
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