Surveyed by A. Bedford, Dec 1846-47 (Jan). Scale of one Inch to 2000 yards. Manuscript tracing by Barlow, mounted on paper. 'Traced upon the Lithographed Chart published at the Government Lithographic Press, Calcutta.'
Surveyed in October 1855. Scale 1000 yards to an inch. Benjn. Bensley, Mate Pilot, November 23rd 1855. B. Bensley, Lith:. Printed & sold by T. Black, Asiatic Lith: Press, Calcutta. Manuscript additions and annotations by Barlow. Formerly numbered 6.