Shankar's Weekly also produced cartoonists like Abu Abraham, Ranga and Kutty, he closed down the magazine during the Emergency of 25 June 1975.

[2] Today he is most remembered for setting up Children's Book Trust established 1957 and Shankar's International Dolls Museum in 1965.

This concern for the poor and the distressed people continued all through his life and reflected in his cartoons.

Shankar's cartoons were published in The Free Press Journal and The Bombay Chronicle.

He spent the period in various Art schools, using the opportunity to study the advanced techniques in cartooning.

However his cartoon also remained neutral often critical to his work, notable a cartoon published on 17 May 1964, just 10 days before Pandit Nehru death, showed an emaciated and exhausted Pandit Jawaharlal Nehru, with a torch in hand, running the final leg of a race, with party leaders Gulzari Lal Nanda, Lal Bahadur Shastri, Morarji Desai, Krishna Menon and Indira Gandhi in tow, to which Nehru remarked, "Don't spare me, Shankar".

He also founded the Children's Book Trust in Nehru House on Bahadur Shah Zafar Marg in New Delhi in 1957.

He also published an autobiographical work, 'Life with my Grandfather' in 1965, a Children's Book Trust publication.

In 2002, 'A Symphony of Dreams', an exhibition to commemorate his birth centenary year, was organised at the Lalit Kala Academy, Delhi.

[8] Shankar Memorial National Cartoon Museum and Art Gallery was established by the Kerala Lalithakala Akademi in 2014, as a tribute to the renowned Indian cartoonist in his hometown.