The letter is from Gilbert T Walker, Meteorological reporter of the government of India and Director General of Indian observatories, to the Director of Solar Physics Observatory, informing that the Government of India is unable to accept the liability to provide grinding stones, stone mortars, and stone mills as part of the fixtures of a house constructed and maintained at public expense.

The letter is from Gilbert T Walker, Meteorological reporter of the government of India and Director General of Indian observatories, to the Director General of stores, India office Whitehall, London. The letter is informing that an evershed spectroscopy that recently arrived at the Kodaikanal Observatory is in badly damaged condition and it has been forwarded for necessary repairs.

This letter is from Gilbert T. Walker to the Secretary to the Government of India asking for assistance from the Government in securing the loan for the Kodaikanal Observatory of a prism, which was in charge of the Joint Permanent Eclipse committee of the Royal Society and the Royal Astronomical Society.

The letter is from Gilbert T. Walker, Director General of Observatories to The Secretary to the Government of Madras, P.W.D, Madras, forwarding duly approved and countersigned plan and estimate of Rs. 2340/- for special repairs to the roof of the spectroheliograph building at Kodaikanal. Also adding, if it's not convenient to provide the funds during 1916-17, the work may be carried out in the year 1917-18 before cold weather.

The letter is from Gilbert T. Walker, Director General of Observatories, to The Secretary to the Government of Madras, P.W.D, Madras, reporting that no works on which expenditure is imperial and not less than Rs.2500/- will be required during the ensuing year. And requested funds from 1917-18 for the special repairs of the roof of the spectroheliograph building.

The letter was written by Gilbert T. Walker to the Director of Kodaikanal and Madras Observatories, approving the estimates of Rs.1075 and Rs.340 for the new pump and alterations in the pump house. He also mentions that the Local Government will allot the funds from the provision made in their budget for Imperial Works.

The letter is from John Evershed to the Superintending Engineer VI circle, Trichinopoly, forwarding the countersigned estimates and requesting to start works as soon as practicable.

This letter was about the continuation of the delayed telegram of 30th May 1905. It also contains the recommendation of the observatories committee & relating to spectroheliographic work.

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 C. M. Smith towards the heating employed in transit room and spectrograph room. Gilbert T. Walker's expressed his openion on heating of both the room in detail.