The letter was a request to send weekly note to Calcutta containing meteorological determination from the wireless signal in the same form as Calcutta wires to the meteorological department, Madras.

The letter informs about the visit of Mr. Seshachar to the Kodaikanal Observatory during January and February of 1921. The Director General of Observatories asked Thomas Royds to make proper arrangements for the visitor. The visit of Evreshed to Lahore for the adjustment of specific astronomical instruments in the Observatory has also been mentioned.

This was a reply letter from John Evershed, past Director of Kodaikanal and Madras Observatories, to the Director General of Observatories, Simla requesting to transfer the salary of Thomas Royds from Kodaikanal Sub-Treasury to Madras Treasury. It was written in the year 1914.

The letter contains details about Thomas Royds' enrollment in the Indian Army Officers Reserve.

The office order was about the temporary promotion of Thomas Royds and A. A. Narayana Ayyar. Due to the absence of John Evershed, Director of Solar Physics Observatory, Kodaikanal, The Assistant Director, Thomas Royds, was appointed as Acting Director, and The first Assistant, A. A. Narayana Ayyar, as The Acting Assistant Director. The order was sent from Simla in 1920.

The item is a letter written by Charles P. Butler, Ag. Director of Kodaikanal and Madras Observatories to John Eliot, the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903. The letter inquires about sending a personal copy of the administration report to M. Compte de la Baume Pluvinel, who was one of the distinguished astronomical spectroscopists.

This letter was reply to D.O.No.2637 of the 6th instant saying that K.A.Narayana Aiyar acted as observer at Periyakulam were October 7, 1907 to January 31, 1908, new appointment was made to the post on April 7, 1908, Periyakulam Observatory, and he does'nt have a idea of what a "charge list".

This letter was about requesting to sent C. M. Smith last pay certificate to this office at an early date for transmission to the Comptroller, India Treasuries after his retirement.

This letter is from John Evershed about the transfer of Mrs Sitaramayya, officiating assistant Director of the Solar Physics Observatory, Kodaikanal, to the office of the Director-General of Observatories, Simla.

This fond contains letters, annual expenditure reports and bills of Kodaikanal and Madras Observatories. It also contains correspondence of John Eliot,Charles Michie Smith and R.E.V.Arbuthnot during July 1901 to March 1903 regarding the index slip, meteorological summaries, seismological reviews and disturbances and other reports like annual expenditure, bills, and telegraphs. It has a report on the condition and proceedings of the government observatory, Colaba, written by N.A.F.Moos. It also has letters from the Royal Society of India, H. Grubb, J. Larmer, R. Fuess, William Butler and Charles P. Butler to the Meteorological Department and Kodaikanal & Madras Observatory.