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This letter was about water vapour measurement made at Kodaikanal.

This letter seeking a clear spell of an hour in the Sagittarius region and a spectrum of Upsilon Sagittari.

This letter was about the BARC image convention and the M. K. Vainu Bappu's visit.

The printed card contains information about the recommendation to the developer for studio and hand camera work.

The item was about M.K.Vainu Bappu was elected as President of the International Astronomical Union, which has 50 countries as a member.

In this letter, it is stated that the tabulations might stop, although the instruments may be retained in action. It was mentioned that he sent the sunshine records also with others for tabulation in the Calcutta office.

In continuation of letter S.D.O. 7867, it was informed that the grating had not yet been delivered, and the related information from contractors was also enclosed.

This item was about the Sunspot spectra taken by John Evershed, where he discovered that there is a radial outflow of gases in a sunspot. This effect is now known as the "Evershed Effect".

This item was about the Donohoe medal received by Prof.M.K.Vainu Bappu in commemoration of the discovery of a comet on 2 July 1949.

This item was about the high resolution line sketch spectra captured by John evershed during his experiment at Kodaikanal Observatory. While experimenting, he came across to capturing the high resolution spectra of Altair, Nova Aquila, Arcturus in the observatory. In this sketch, he pictured the resolution spectra that he observed as Umbra for high resolution and Penumbra for low resolution.