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.

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.

The letter informs the correction of the data for the annual report 1913, which G. C. Simpson, the Imperial Meteorologist in SIMLA, prepared. The mistakes in the lowest barometer reading from August to December are mentioned in a tabular form.

The letter is from Thomas Royds to Messrs Grindley & Co with an order for periodicals. It consist of an order for a list of periodicals and also states that the amount for the subscription of periodicals will be remitted through a bill of exchange.

The letter is from Thomas Royds to Messrs Grindlay & Co regarding a bill of exchange. It states that a bill of exchange for the estimated cost of periodicals 1921 is enclosed with the letter. It also requests for a stamped copy of the receipt of the amount and statement of accounts in duplicate by return mail.

The letter is from Thomas Royds to Le Directeur Observatoire Royal, Berlin, regarding missing volumes of publication. It consists of the list of publications that are not available in the Kodaikanal Observatory