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, 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.

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.

This letter is from Gilbert T. Walker to the Director of Solar Physics Observatory, Kodaikanal regarding forward of the glass object via post to the Director General of Stores, London enclosing the a copy of a letter

The letter is from Gilbert T Walker, Meteorological Reporter to the Government of India and Director-General of Indian Observatories to the Director, Solar Physics Observatory replying to letter No. 526 of 24 Sep 1904 and returning the plans and estimate of Rs.6300- for new dome of photoheliograph it also say about other modification mentioned in the previous letter.

This is a letter from Gilbert T. Walker, Director general of observatories to the Director Kodaikanal and Madras Observatories sanctioning the plan and estimate amounting to Rs.175 for erecting a verandah in front of the Spectroheliograph building in Kodaikanal Observatory.

The letter is about sanctioning the purchase of sunshine cards from Lawrence Asylum Press at Madras since the supply of sunshine cards from England was delayed by two years.

This letter from Gilbert T. Walker was sent to the Director General of Stores regarding a serious impediment to use the dividing engine and rust on the object glass of the microscope. He requested the Director to forward it via post for transmission to the Cambridge Scientific Instrument Company

This Letter is from Gilbert T. Walker to the Director asking about an instrument arrived by 'Jumna' to report on the matter.

The letter is from Gilbert T. Walker to Charles Michie Smith regarding reproducing spectroheliograms at home. It states that a sanction would be required from the government and suggests including as many firms as possible with the approximate cost.