40 The Mud Point And Auckland Channels, And Kedgeree Roads.
Scope & Content:
As surveyed in May 1857. Scale of a thousand Yards to an inch. Joseph Obbard, River Surveyor, H.C.S.V. Cavery, Diamond Harbour, 29th May 1857. T. Black, Lithr:, 4 Waterloo Street, Calcutta.