This letter mentions Dr.M. K. Vainu Bappu has been elected the President of the IAU for the term 1979-1982, followed by Bappu's distinguished life since his education from Hyderabad to Harvard and his contributions, awards, honours and leadership at national and international levels.

This letter concerns the role of astronomy. The contribution of astronomy to scientific development and the significant achievements and its continuous efforts.

This letter was related to speech delivered by Dr.M. K. Vainu Bappu, Director, IIA on the celebration of Silver Jubilee of Uttar Pradesh Observatory, Nainital, on 4th Novermber 1979

This letter was about Kodaikanal Observatory's position & surroundings and also talks about scientific celebrities contribution and visits of Dr. Homi Bhabha, Dr. S. Chandrasekhar.

This letter was about Kavalur observatory from its genesis to its commencement in 1972. its achievements throughout the whole journey.

Observation summaries of July 28 to 31, Aug 1 to 19 and Dec 21 to 31.

This letter was sent to Dr.M. K. Vainu Bappu on Hari Om Ashram Trust Awards in Science saying that he was selected for Meghnad Saha Award for the year 1977. The award is of the value of Rs.10,000/-.

This letter was about the performance of the Newton spectrograph, prepatory work and observations on sky.

This letter was about admiring on the achievements of Sastry for his professional status at the institute.

This letter was about conversation between Sastry and Bappu on Gauribidanur array as compared to the Clark Lake Radio Observatory.