Changes

*[https://archive.org/stream/b21452404#page/350/mode/2up "Dum Dum"], page 350 ''Report of the Commissioners Appointed to Inquire into the Sanitary State of the Army in India : with Abstract of Evidence, and of Reports Received from Indian Military Stations'' 1864 Archive.org

*[https://archive.org/stream/thackersguidetoc00firm#page/156/mode/2up "Dum Dum"] page 156 ''Thacker's Guide to Calcutta'' (1906) by Rev W.K. Firminger. a noted historian. Archive.org

*[https://archive.org/stream/in.ernet.dli.2015.501554/2015.501554.Bengal-Past#page/n45/mode/2up "Memories of Dum-Dum"] page 35, ''Bengal, Past and Present Volume 26'', 1923 Archive.org, Digital Library of India Collection.