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Author: United States. Coast Survey.
Title: Long Island Sound, Connecticut River Entrance to Westbrook Harbor, Conn. / by George S. Blake.
Publisher: [Washington] : The Survey, 1838.
1 map; 112 x 61 cm., on 2 sheets 112 x 74 cm., Sheet 2/2
Notes: Bathymetry shown by soundings and isolines. Photocopy of an original manuscript. Standard map series designator: Sounding Sheet No. 41.