64 The Channels Between Mud Point And Middleton Point.
Scope & Content:
As surveyed in December 1862 & January 1863. Scale One thousand yards to the Inch. Joseph Obbard, River Surveyor, Salween S.V., off Kedgeree, 26th January 1863. T. Black & Co., Lithrs: Engrs:, Cal:.
20 The Channels From The Gasper Light-Vessel To Cowkolly.
Scope & Content:
Surveyed between the 3rd Decr. 1853 and 16th January 1854. Scale of 2000 Yards to an Inch. A. Bedford, River Surveyor, Kedgeree, Feby. 20th 1854. Drawn on transfer paper & lithographed at the Asiatic Lith: Press, T. Black, Lithographer.
32 A Sketch Of The Gasper And Thornhills' Channels.
Scope & Content:
Surveyed in December 1855. Scale of a thousand yards to an inch. Joseph Obbard, River Surveyor, Kedgeree, 2d. Jany. 1856. T. Black, Asiatic Lith: Press, 4 Waterloo Street, Cal:.
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.
34 The Auckland and Mud Point Channels as Surveyed in March 1856.
Scope & Content:
Scale One thousand yards to an inch. Joseph Obbard, River Surveyor, Beacon S.V., 28th March 1856. T. Black, Asiatic Lith: Press, No. 4, Waterloo Street, Calcutta.
45 The Rangafulla Channel as surveyed in May & June 1858.
Scope & Content:
Scale a thousand yards to the Inch. Joseph Obbard, River Surveyor, H.C.S.V. Spy, off Kedgeree, 7th June / 58. T. Black, Lithr: & Engr:, 4 Waterloo St., Calcutta.
56 The Gasper And Thornhills' Channels And The Reef Head Passage.
Scope & Content:
As surveyed in December 1860 and January 1861. Scale One Thousand Yards to the Inch. Joseph Obbard, River Surveyor, Salween S.V., off Calcutta, 17th Feby. 1861. T. Black & Co., Lithrs: & Engravers, Calcutta.
37 The Mud Point Channel as Surveyed in October 1856.
Scope & Content:
Scale of a thousand Yards to an inch. Joseph Obbard, River Surveyor, H.C.S.V. Cavery, 7th Novr. 1856. T. Black, Asiatic Lith: Press, 4, Waterloo Street, Calcutta.
35 The Rangafulla Channel as Surveyed in April & May 1856.
Scope & Content:
Scale of a thousand yards to an inch. Joseph Obbard, River Surveyor, Beacon S.V., 24th May 1856. T. Black, Asiatic Lith: Press, No. 4, Waterloo Street, Calcutta.