His interactions with many a revolutionary (due to his father's involvement with the Congress and the Satyagraha movement at Raigunj), the explosive air of the times, and the inspiration from a famous alumni (The Oaten Affair – Netaji Subhas Chandra Bose assaulted Prof Oaten due to the latter's derogatory comment on Indians ) [2] probably drove him to antagonise an Indian-loathing teacher at Scottish Church College, and follow Bose's suit.

[4] The 12th Prabasi Banga-Sahitya Sammelan was inaugurated by Rabindranath Tagore in Calcutta, December 1934 (Photo : The Reception Committee was chaired by Ramananda Chatterjee)..Also seen in the photograph is Akshay Kumar Nandi, father of Amala Sankar.

A Bengali folk rhyme [5] captures this World War II event: The bombing led to widespread panic – over a million people fled from the city and there was a huge pressure on civic authorities to control the situation.

Indian Civil Defence Department expanded at a rapid pace to counter these threats and planned lighting restrictions, medical platoons, fire-fighting and rescue units.

[17] EIMPA played an important role as a trade representative, negotiating materials for the film industry of eastern India and much of Diptendu's efforts were directed for the same.

[18] In 1956, Diptendu and other stalwarts like Satyajit Ray, Robert Hawkins, Vijaya Mulay and Dasgupta revived the Calcutta Film Society which witnessed the joining of 300 members.

[19] The same team were then the prime movers behind the formation of the Federation of Film Societies of India (FFSI) in 1959 which was presided by Satyajit Ray, with Diptendu as the Jt.

Sangeet Natak Akademi convened the first film seminar at Delhi and it was inaugurated by Prime Minister Pandit Jawaharlal Nehru.

[27][28] The elaborate reports of the 1968 and 1973 Committees raised issues about institutional finances, cess based state funding of cinema, creating a generation of ‘low-budget’ stars to counter the lopsided economics of a star-heavy industry and censorship reforms.

[30] The apex body of film distributors and producers (EIMPA) continues to help the industry facing the challenges of corporatisation, censorship, piracy and "multiplexes".