United States. War Department & ProQuest (Firm). (1857). Letter of the Secretary of War, communicating a map of the Patuxent and St. Mary's Rivers. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. War Department and ProQuest (Firm). Letter of the Secretary of War, Communicating a Map of the Patuxent and St. Mary's Rivers. Washington: [publisher not identified], 1857.
MLA (9th ed.) CitationUnited States. War Department and ProQuest (Firm). Letter of the Secretary of War, Communicating a Map of the Patuxent and St. Mary's Rivers. [publisher not identified], 1857.
Warning: These citations may not always be 100% accurate.