Scales of 500 'British Miles 68.8 = 1 Degree' [=3.7 inches], etc. Manuscript scale note added '140 miles to an Inch, = 1:8870400'. Marked in manuscript to show 'Stations at which Collectors reside'.
Surveyed in October 1848. Scale of 1,000 Yards to an Inch. A. Bedford, River Surveyor, Kedgeree, 24th October 1848. Drawn on Lithographic Paper by A. Bedford. Printed & sold by T. Black, 3 Hare St. Cal.
Surveyed in April 1849. Scale of 1000 Yards to an Inch. A. Bedford, River Surveyor, Diamond Harbour, April 29th 1849. Lithographed & Sold by T. Black, Asiatic Lithographic Press, Calcutta.
Surveyed in Octor. 1849. Scale of 1,000 Yards to an Inch. A. Bedford, River Surveyor. Lithographed & Sold by T. Black, Asiatic Lithographic Press, Calcutta.
Surveyed in April 1851. Scale of 1000 Yards to an Inch. A. Bedford, River Surveyor, Calcutta, May 12th 1851. Lithographed & Sold by T. Black, Asiatic Lithographic Press, Calcutta.