The letter was an enquiry with reference to the Photoheliograph which was received on loan from Greenwich Observatory, whether to return it or it may be completely dismantled and the parts used for other purposes in our research work.

The letter was a reply to A. S. Eddington acknowledging his work on redshift and his proposal to incorporate factor of 2 in the process. Further he mentioned about Thomas Royds results from the eclipse spectra.

This letter was about three volumes of Transit Observations and Mural Circle Observations that had been stored some time at the Indian store depot have recently been presented to the Royal Astronomical Society

This letter was about a drawing of the spectroheliograph that was received at Gilbert T. Walker from the Cambridge Scientific Instrument Company.

This letter was reply to the questions contained in the letter dated July, 1906, from Prof. Schuster on behalf of the International Union for Solar Research.

This letter was a forwarded copy of this office D. O. No. 312 dated 20th August 1906 (addressed to Professor Fowler, London) to the Director, Solar Physics Observatory, Kodaikanal, for information.

The letter points out that the new wire which was inserted in the Photoheliograph on Nov.14, 1922, does not appear to be taut in its frame. The resulting irregularities make the measure of the Zero point a little uncertain.

The letter was an reply to Mrs. John Evershed saying that you enquired of my assistant about the name of "Evershed" as applied on lunar crater. Further he mentioned about its co-ordinates and enclosed the portion of the NASA map showing the crater named to it.

This letter was issued to Dr.Bappu saying that he was elected as an Associate of the Society. As an Associate he will have the same privileges as Fellows with regard to the Society's journals.

Charles P. Butler sent this letter to Gilbert T. Walker on installing a spectroheliograph in the Kodaikanal Observatory. The letter was sent from the Royal College of Science, London, on 3rd June 1904.