He writes on the visual arts and the rapidly changing face of Calcutta. He published A Jaywalker’s Guide to Calcutta on the streets of the city and its people in 2007. Thereafter, he collaborated with the photographer, Christopher Taylor, to bring out White & Black: Journey to the Centre of Imperial Calcutta on Dalhousie Square. Das continues to contribute to several prestigious publications. His book on Bombay Photo Stores of Calcutta is expected to be published soon.