[1] He served as the vice president and secretary of the administrative committee of the Sahithya Pravarthaka Co-operative Society.
[1] He also served as the chairman of the Engandiyur Deendayal Trust and the manager of Saraswati Vidyaniketan Central School.
[4] He has repeatedly mentioned that the old coins in his father's collection, who was a merchant, his extensive reading, and his friendship with Kesari A. Balakrishna Pillai from his school days, all of these led him to write history.
[5] An article by Panikassery was first printed in 1955, which was a short biography of Thakazhi Sivashankara Pillai, published in the Pune Malayali Special Edition.
[6] He researched and discovered how the Tamil language and culture, which had existed since ancient, Vedic times, had deeply influenced the social life of South India.