16"/1 mile survey of Calcutta, in 9 sheets (two copies of sheet 5), engraved at the Survey of India Office Calcutta, published 1895, surveyed under the direction of Col. J. Sconce,, I.S.C. and Lt. Col. C. Strahan, R.E., Deputy Surveyor-Generals, by Col. W. Barron, I.S.C., Col. W. H. Wilkins, I.S....