The letter was about the salary given to P. R. Chidambara Ayer when he was working as the Meteorologist at Madras. The letter was written in 1920.

The document is a letter from William Butler to the Director of Kodaikanal and Madras Observatories, about the plate holder of the photographic plates that were supposed to send to Kodaikanal Observatory. It explains the need and usage of the plate holder.

This is a Letter from M.Brown executive engineer Madura special division to the Superintending engineer VI Circle regarding revised estimates for the engine house to the Kodaikanal electrical installations.

This is a letter from Dr. Gilbert T. Walker to Charles Michie Smith informing that the indent has gone in complete except that in the case of the low power microscope, which is received already.

This letter was sent from Gilbert T. Walker to Charles Michie Smith regarding purchasing a slit-making machine, which they had made as an adjunct to the spectroheliograph. It's mentioned that sanction for the purchase of the machine has been sent home by telegraph by the Government of India, and Smith has to receive it in the case of Spectroheliograph.

This item contains letters from F.J. Wilson Superintending Engineer to the chief engineer regarding the works connected with the observatory buildings at Kodaikanal. It also contains the exchange between Charles Michie Smith The Director of Kodaikanal and Madras Observatories with the superintending officer regarding plans and estimates for quarters for the mechanic, book-binder, and three additional peons of this observatory and a return intimation confirming the proposed construction of 5 additional godowns for the accommodations for the peons, two lascars, a book-binder, and a mechanic at the Kodaikanal solar physics Observatory.

This item contains a note by the chief engineer public works department stating an estimate amounting to Rs.4400 for a steel Framed dome for the Madras Observatory which should be of Sir Howard Grubb standard design.

This item is a letter from John Evershed, Director of Kodaikanal and Madras Observatories, to Executive Engineer Madura Division, honouring 7 estimates duly countersigned and informing that other estimates are being sent to the superintending engineer.

This item contains letters from W.L.Strange Under Secretary to the Government of India, Public Works Department to the Secretary to the Government of Madras Public works Department regarding the sanction of further expenditure of Rs.3000 for the construction of glazed verandha to the Director's residence at the Kodaikanal Observatory.

The letter is from J. Evershed to the acting secretary in continuation to letter no. 874 explaining that he has no authority to hand over any part of the Madras Observatory compound and that can only be done by the Government of India, Department of Revenue and Agriculture