Keer was born in Ratnagiri on 23 April 1913. His father's name was Vithal and his mother's was Devaki; he was married to Sudha and had six children.[5]: 136 K. N. Jadhav writes that the revolutionary atmosphere in Ratnagiri in the early 1920s had a great influence on him. He migrated to Mumbai in 1938 to work with the Education Committee of the city's Municipal Corporation. He began writing in "Free Hindustan". His first biography, that of Savarkar, was first published in 1950.[2]: 159 Later he wrote biographies of Ambedkar and Tilak. Resigning from his job, he wrote biographies of Phule, Shahu and Gandhi.[2] He was bestowed with the Padma Bhushan in 1971[2]: 159 and was conferred with an honorary doctorate by the Shivaji University in 1980.[2]
Keer had worked with Savarkar in the building of a temple in Ratnagiri.[6]
Lokmanya Tilak ani Rajarshi Shahu Maharaj: Ek Mulyamapan (1971)
Vishwabhooshan Dr. Babasaheb Ambedkar: Manas Ani Tattvavichar
Mahatma Phule : Samagra Wangmay (1969) (Coeditor S. G. Malshe)
Krushnarao Arjun Keluskar: Atmacharitya va Charitya
Rajarshi Shahu Chattrapati
Krutadnya Mi Krutartha Mi (autobiography)
Lokhitkarte Babasaheb Bole
Teen Mahan Saraswat (1979)
Hyani Itihas Ghadawila (1980)
English
Veer Savarkar / Savarakar and His Times (1950)
Keer added disclaimer on this book that it is based on "a plethora of material which was kindly made available to me by Savarkar himself and his kind interviews".[7]
Dr. Ambedkar: Life and Mission (1954)
Lokmanya Tilak: Father of Indian Freedom Struggle (1959)
Mahatma Jotirao Phule: Father of Indian Social Revolution (1964)
Mahatma Gandhi: Political Saint and Unarmed Prophet (1973)