[2] Parameswaran Nair established himself as a biographer, critic, essayist and literary historian.
His 'History of Malayalam Literature' published by Kendra Sahithya Academy had been translated into almost all the major Indian languages besides English.
He has a number of essays and critical studies collected together in about half a dozen volumes.
A staunch Gandhian in words and deeds he did yeoman service to propagate Gandhian ideals among the masses and was closely associated with the 'Kerala Gandhi Smaraka Nidhi' in its several activities particularly in the publication of the seven volume 'Selected writings of Gandhiji'.
The Trust has gone from strength to strength over its last Twenty Eight years of inception giving Parameswaran Nair Smaraka award to best biographer in Malayalam literature and Professor Guptan Nair Smaraka award to best critique in Malayalam literature on 25 November every year.