Nothing I said was based on an individual source I referred to several of the world s major English language media and reference sources I can t see either any response to the detailed points about the fallibility of Google numbers especially those that go back to the mid 20th century or are referring to the city in that period If you want to look at Google numbers how about doing a genuinely narrow Google search which focuses on contemporary references to the city in ultra recent publications ie via Google news where I am that s 9 510 for Calcutta many of which aren t even references to the city itself and 73 800 for Kolkata