[1] Pyarelal was portrayed by Pankaj Kapur in the Richard Attenborough film Gandhi (1982).
Then personal secretary to Pyarelal, Dewan Vasdev Khanna (1923–2010), played a key role with Richard Attenborough in completing a script for film "Gandhi", which attained world fame.
Nayyar held privately a large cache of personal papers that belonged to Gandhi which were only brought into public domain only in 2007.
He has biographical books on Mahatma Gandhi, on which he was assisted by Dewan Vasdev Khanna (1923-2010).
Dewan Vasdev Khanna assisted Pyarelal Nayyar till 1980, before moving to United States of America.