Surveyed in Octor: 1850. Scale of 1000 Yards to an Inch. A. Bedford, River Surveyor, Calcutta, Octr. 31st 1850. Lithographed & Sold by T. Black, Asiatic Lithographic Press, Calcutta.
Surveyed between the 15th of February and 27th of March 1854. Scale of 1,000 Yards to an Inch. A. Bedford, River Surveyor, Calcutta, April 12th 1854. Drawn on Transfer Paper by A. Bedford & Lithographed by T. Black. at the Asiatic Lithographic Press, Calcutta.
Surveyed between December 3rd / 54 and Jany. 3rd / 55. Scale 1000 yards to an Inch. Benjn. Bensley, River Surveyor, January 5th 1855. On Transfer Paper by B. Bensley & Lithographed by T. Black, Lithr. Asiatic Lith. Press, Calcutta. Annotated by Barlow.