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.

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 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.

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

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 on M. K. Vainu Bappu's research on Sun. It also mentioned finding a location for the Solar Physics Observatory and also asking Bappu for the present address of Zeiss and of Cox, Hargreaves and Thomson.

This letter was about M. K. Vainu Bappu got sanctioned a scholarship of £400 per annum for 4 years and that he secured admission to Battersea Polytechnic of the University of London for a course in Electrical Engineering.

This letter informs that C. V. Raman received M. K. Vainu Bappu's letter of the 8th instant with much pleasure.

This letter was to inform that C. V. Raman was greatly obliged for M. K. Vainu Bappu's letter of the 8th July 1954. He got one of the Bausch and Lomb catalogues and was very favourably impressed by it and intend to go ahead and purchase one or more of these gratings for his work.