Sundararao gave a lecture series on the history of Bengaluru at the Secretariat Club in Cubbon Park during the 1980s. The lecture notes were compiled into the nucleus of a book, and turned into his magnum opus, Bengalurina Itihasa,[1][15] which was released in 1986 by Chief Editor of the Karnataka State Gazetteer Dr. Suryanath U. Kamath. The book was published after many years of laborious research in government archives and after researching relevant archeological artefacts located all over the city and surrounding rural areas.[15] This book is considered as an authentic source on the history of Bengaluru.[16]