Surveyed in March 1856. 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 St., Calcutta. Formerly numbered 1.
Surveyed in May 1850. Scale of 1,000 Yards to an Inch. A. Bedford, River Surveyor, Calcutta, May 29th 1850. Lithographed & Sold by T. Black, Asiatic Lithographic Press, Calcutta.