The letter is from Thomas Royds, Ag. Director, Kodaikanal and Madras Observatories to the Superintending Engineer, VI circle, Trichinopoly, stating that other works in the observatory can be stopped except the reroofing of spectroheliograph for funds and ask not to postpone unless it's unavoidable.

The letter is from Thomas Royds, Ag. Director, Kodaikanal and Madras Observatories to the Superintending Engineer, VI circle, Trichinopoly, in continuation of letter no. Three hundred fifty-three asked when the pump installation would start and requested completion by the next dry season.

The letter certifies that P. R. Chidambara Ayer has been working in Solar Physics Observatory for the last ten years under the supervision of Thomas Royds. It mentioned that certificates related to education and work experience and copies of the thesis on " The distribution of Sun-spot in longitude" were also attached with the letter. It is an experience certificate for approval for submitting P. R. Chidambara Ayer's thesis.

The letter was a reply of Thomas Royds to memorandum No. 1541 D/20-1 dated 11th June 1920 from the Revenue Department, Government of Madras. Thomas Royds discusses in this letter the challenges involved in creating a Kodaikanal and Madras Observatories report in the prescribed format for any period other than the calendar year.

The letter is from Thomas Royds to the Director of the New York Public Library regarding Memoirs of Kodaikanal Observatory. It states that no further memoirs of the Kodaikanal Observatory have been published.

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.

Letter from Thomas Royds to Director General of Observatories requesting government order referred to the letter received from Executive Engineer, Madura Special Division.

The letter served as a response to The Director General of Observatories's inquiry, stating that he had not received any orders from outside.

The letter is from Thomas Royds to the Accountant General Madras regarding the Contingent bill for books and periodicals purchased. It requests a bill of exchange in favour of Messrs Grindley and Co.

The letter is from Thomas Royds to the accountant general Madras regarding bills for purchasing books and periodicals. It is sent along with a contingent bill.