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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.

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

The letter is from C. V. Ramam, Raman Research Institute to M. K. Vainu Bappu, Nizamiah Observatory acknowledging his letter on 26 March 1954 and saying he has a suitable location for solar physics observatory on the institution grounds. The letter also ask to let know presen address of Zeiss and Cox.

The letter is from C. V. Ramam, Raman Research Institute to M. K. Vainu Bappu, Nizamiah Observatory asking about using telescope mirrors made of cast aluminium and about diffraction grating as a preliminary to building 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 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 letter was about the M. K. Vainu Bappu's application to National Institute of Science of India. A testimonial from Shapley on Bappu's professional knowledge in observational, analytical astronomy and astrophysics and his work in observatories.

This letter was about the Bappu's application for admission into Harvard Observatory and the formalities discussed by Harlow Shapley.

This letter was a reply note of June 29 of M. K. Bappu father of M.K.Vainu Bappu about the indebtedness of both to Mr.Campbell. Further, Harlow Shapley mentioned his enjoyment with M.K.Bappu and his wife with their son in America. Shapley mentioned that probably you have heard that if your son had not gone to Mount Wilson we would have offered him a half-year lectureship in the Harvard University.