This letter is from Gilbert T. Walker to Charles Michie Smith, thanking him for the copy of Rowland's map and calling his attention to the error at the daily weather summary. He also informs that there is no objection to paying the photographer by piecework, and Lockyer needs the photo heliograms only to measure areas.

This letter was sent to Charles Michie Smith from Gilbert T. Walker who was glad to pressed Slit Machine at once instead of indenting for it later on

This is a letter from Gilbert T. Walker to the Director of Kodaikanal and Madras observatories informing despatch of drum by post and a request for acknowledgement.

This is a letter from Gilbert T. Walker to Charles Michie Smith informing that there might be difficulty in getting clocks from the mathematical instrument department.

This is a reply letter from Gilbert T. Walker to the Director of Solar Physics observatory, Kodaikanal requesting for a special indent for the requests of clocks in the above letter. He also asks for precise details about the required clocks.

This is a letter from Gilbert T. Walker to Charles Michie Smith stating the inadequacy of the single clock at Madras for the time service. This letter asks for a detailed proposal for supplying the deficiency of clocks.

The letter is from Gilbert T. Walker to Charles Michie Smith discussing about the enlargement of photos, the orientation of spectroheliograph, scientific instruments, and the sending of 'sun pictures' plates to Christie.

this is a letter from Gilbert T. Walker to the Director of Kodaikanal and Madras observatories regarding the purchase of clocks. In the letter it states that one additional transit clock is provided considering the lack of clocks in Madras Observatory. It also consist of various recommendations which should be added to the report of the Madras Observatory.

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.

The letter is from Gilbert T Walker, Meteorological reporter of the government of India and Director General of Indian observatories, to Charles Michie Smith, Director of Solar Physics Observatory, regarding the spectroheliograph amplifier, the distance of the mirror, enlarging lens, and building of the new piers.