Preliminary sketch showing the positions of Davis's South Shoal and other dangers recently discovered by the Coast Survey and the soundings on the Old South Shoal, Bass Rip, Old Man, Pochinck Rip, &c.United States Coast SurveyDavis, Charles HenryMcBlair, Charles H.Bache, A. D.EnglishMap1852[Washington, D.C. : United States Coast Survey, 1852?]Nautical charts—MassachusettsMassachusetts—MapsNautical charts—Nantucket SoundNantucket Sound (Mass.)—MapsMaps—Massachusetts—1852Nautical charts—Massachusetts—Nantucket Sound—1852MapsMap