This letter is from Colonel St. G.C. Gore to the Meteorological Reporter to the Government of India and Director General of Observatories about the Vertical force Magnetograph, which had been sanctioned for Kodaikanal.

This letter was about to furnishing the eclipse photographs as requested by Govt. of India.

The letter was a request for sending copies of all printed forms, instructions, and full particulars of the photographic process in connection with the 8-inch solar photographs done by the Superintendent of Trigonometrical Survey.

This letter is from Charles P. Butler to the Meteorological Reporter to the Government of India requesting the furnishing of necessary meteorological instruments. Also he enclosed a column of instruments are required.

This letter was from Charles P. Butler to the Agent of Government Consignment, Madras, stating that the fundamental components of the actual spectroscope were received in a hopelessly damaged state.

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.

The item is a letter to inform Deputy Tahsildar, Kodaikanal that rainfall returns daily, weekly, and monthly have been sent to the collectorate as per the request of the Collector.

The letter was from Charles P. Butler to John Eliot, the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903 on giving the information requested by professor Birkeland on photograms.

The letter was from Charles P. Butler to John Eliot, the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903 about the broken-down condition of the fencing of rain gauge at Periyakulam station.

The letter was from Charles P. Butler to John Eliot the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903. The letter is about increasing the power of the apparatus used for sun-spot spectra of Kodaikanal Observatory.