This letter was from the Director of Kodaikanal & Madras Observatory informing about the erection of new buildings for Poona instruments and outside painting of Observatory Domes, the Spectroheliograph building and the magnetic observatory.

This letter was written to the Superintendent Engineer from H.G. Nicholson, proposing a new building for the Kodaikanal Observatory to house the instruments transferred from the Poona Observatory.

This letter was written to Gilbert Thomas Walker, the Director General of Observatories from Secretary to Government, Bombay Castle, Educational Department, in reply to the letter regarding removing the revolving dome of Poona Observatory to Kodaikanal. In this letter, it was stated a plan and estimate for another roof for the observatory building.

This letter is from Thomas Royds to the Director General of Observatories stating new works regarding new buildings for Poona instruments. In this letter, the Superintending Engineer asked for 10,000 from the Madras Government for buildings.

The letter is from John Evershed to Gilbert T. Walker replying to his letter about the transit room to be built on the Sion hills, he write his suggestions and return the plan diagram.

The letter is from Gilbert T. Walker to the Director Kodaikanal informing about enclosing a copy from the Finance Department sanctioning thr transfer of the observer's house at Periyakulam together with its site to the Govt. of Madras free of cost.