This letter was asking question on using telescope mirrors made of cast aluminium or other light metal, which could be cheap and easy to make and also what kind and size of grating, its makers and price to building a solar observatory.

This letter was to inform C. V. Raman was thankful for the letter of the 4th April, 1954, which he read with much interest.

This item refers letter from Dr.(Mrs.) Madhuri R.Shah, Chairman, UGC regarding the Hari Om Ashram Trust Award to late Dr.M. K. Vainu Bappu, includes folder containing citation and certificate, One D.D. for Rs.10,000/- drawn on the SBI, New Delhi and receipt proforma for Rs.10,000/- to be returned to the UGC duly signed on the revenue stamp.

This letter was to inform Dr.Vainu Bappu that Indian National Science Academdy has to decided to award S. N. Bose medal to M. K. Vainu Bappu for the year 1983.

The letter is about water vapour observations. Bappu was also asking whether the point source lamp was used. He also mentioned that he would be in Bangalore on April 27.

This letter was discussing on financial resource, disposal and acquiring equipment specifically for research on the Sun. Further he mentioned about solar telescope and high dispersion spectrograph, tower telescopes at Mt.Wilson, Potsdam Arcetri and trend of problems in solar research.

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

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

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

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/-.