'Below Saugor Anchoring Buoy was surveyed between 2nd and 19 Dec 1844. Above it between Jan 13 and 23./45.' No scale given. Manuscript tracing by Barlow.
Surveyed in the early part of November 1843. Scale of 6000 yards [=4 inches]. A. Bedford, River Surveyor. Manuscript tracing by Barlow ('R. Fred: Barlow Transt: Dec: 14 / 1843'). Annotated by Barlow: 'Very doubtful if any copy exists of this aspect of the channel, either lithographed or engra...
Surveyed Sept: 1843. A. Bedford. Scale of 5000 yards [=5.15 inches]. Manuscript copy by Barlow ('R.F.B. copied Nov: 1843'). Additions by Barlow: The Outer Rangafullah Channel. As surveyed and buoyed off, April 1843.
Surveyed in January 1851. Scale of 1000 Yards to an Inch. A. Bedford, River Surveyor, January 13th, 1851. Lithographed and Sold by T. Black, Asiatic Lithographic Press, Calcutta.
Surveyed between Septr. 18th and Octr. 3rd 1854. Scale 1000 yards to an inch. A. Bedford, River Surveyor, October 7th 1854. Drawn on Transfer paper by B. Bensley, Lithd. by T. Black, Asiatic Lithographic Press, Calcutta.
As surveyed in October & November 1857. Scale of a thousand Yards to the Inch. Joseph Obbard, River Surveyor, H.C.S.V. Spy, 18th Novr. 1857. T. Black, Lithr:, 4 Waterloo St., Calcutta.
As surveyed in October 1858. Scale a thousand Yards to an Inch. Joseph Obbard, River Surveyor, H.C.S.V. Spy, 27th Octr. 1858. T. Black, Chromo-lithr:, 4 Waterloo St., Calcutta.
As Surveyed in October & November 1861. Scale One thousand Yards to the inch. Joseph Obbard, River Surveyor, Salween S.V., off Mud Point, 12th November 1861. T. Black & Co., Lithrs: & Engrs:, Cal:.