“It was a contour survey of the Ganges Canal. It was done by Director, Ganges Canal Works, WT Doddsworth,” MlSl librarian, V Uma Maheswari said. The survey document that MlSl possesses is huge. It has over 120 sheets in dark yellow colour. Every sheet is approximately 10 ft x 10 ft and is folded into 3 ft x 3 ft so that it could be easy to handle. Smiling, the librarian said, "still it is not very easy to handle."