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Citation Info Rumsey, David, 1944-. (2015). Map of Calcutta from actual survey in the years 1847-1849 / by Frederick Walter Simms ; the suburbs of the town are from surveys subsequently furnished by Major H.L. Thuillier ; executed by himself & Captain R. Smyth ; reduced and engraved by J. and C. Walker (Raster Image). [GeoTIFF]. Cartography Associates. Retrieved from https://geodata.lib.berkeley.edu/catalog/stanford-bf278sn8784