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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 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 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.

The letter is from C.V Raman, Honorary Secretary of the Indian Association of Cultivation of Sciences, to the Director of Kodaikanal and Madras Observatories regarding Kodaikanal Observatory Bulletin. It is a request to be added to the distribution list of publications to receive future publications, and their proceedings, Bulletin, and reports will also be sent to Kodaikanal.

This letter is from Cambridge Scientific Instrument Co. Ltd. to The Director General of Stores regarding the dividing engine. If returned to them, they will clean it thoroughly free of cost, although they will not be responsible for either the carriage.

E.C.J. Bond informed through this letter that they don't have any spare magnet system declination magnetograph, so he will send a small magnet and some fine phosphor bronze fibre on the reel.

The letter is from Captain J.O. C. Phelan, Officer in charge of the VI Circle. to The Director of Observatories, Madras and Kodaikanal, forwarding the revised estimate of Rs.3540/- for the reroofing of the spectroheliograph building for his countersignature and transmission to The Director General of observatories for sanction.

This letter was about the extension of tenure of C. M. Smith for one year from 13th July 1909, the date on which he attains the age of 55 years.