The letter is from William Foster, registrar and superintendent of records, to the Secretary to the Government of India Department of Revenue and Agriculture regarding changes in address. It is to inform that the Solar Physics Observatory, formerly at South Kensington, was moved to Cambridge, and future communications and parcels should be sent to the new address.

This letter was about the reply to an earlier question of Walker on the issues of heating room and the convection current.

This letter was conveying Dr.M. K. Vainu Bappu to congratulating him on the government's decision to award him the Shanti Swarup Bhatnagar Prize for his contributions to physical sciences in 1970.

This letter informing that a grass minimum thermometer by J. Hicks was brought into use on the 1st instant in place of another one which was found broken on the previous morning

This letter informs that a weekly barograph had been sent to the Kodaikanal and Madras Observatories address by rail, and also the Director General of Observatories was told to take delivery of the package from the Kodaikanal railway station

This letter informs that the Director had delivered on the 17th instant a case of a barograph daily and also mentioned the weekly barograph was brought into use on 8th December

The letter is from Antoine Rene deChazal, Executive engineer, Madura Division, to the Director, Kodaikanal Observatory, saying that expensive grates than the designed may not be required and if a different design is necessary, then there will be a need to obtain orders on it.

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 is about photo-visual lens and lens for spectroheliograph for observation in Kashmir

This letter is an extract from U.O. to the government of India, Meteorological Department, on 11th November 1911 regarding dismantling the telescopes and their packing for transit from Poona observatory to Kodaikanal and Madras Observatories by the then Director J. Evershed. In this letter, it was mentioned that the telescopes should be handled with great care, and it was also said that J. Evershed or his deputy should control the packaging by visiting Poona. John Evershed also replied, agreeing with this letter.