The book entitled "Sahodaran Ayyappan" written by Prof. Viswamangalam Sundaresan is the biography of Sahodaran Ayyappan. The book shows the life of Sahodaran Ayyappan in brief. Sahodaran Ayyapan was a social reformer and activist from Kerala. He was also a journalist. He arranged 'Misra Bhojan' in 1971 to give the opportunity to every human being to eat under one roof. He was doing such activities to eradicate the caste system and untouchability.