This letter is from W. L. Strange to the secretary to the Govt. of Madras, Public Works Department, regarding the sanction of the complete abstract estimates aggregating Rs. 1,26,000 for all works related to Kodaikanal Observatory buildings.

This letter is from William Butler enclosing a copy of a letter from Cambridge Instrument Company relative to the photoelectron-heliograph undersupply for Kodaikanal Observatory and the supply of a slit-making machine.

The document is a letter from William Butler to the Director of Kodaikanal and Madras Observatories, about the plate holder of the photographic plates that were supposed to send to Kodaikanal Observatory. It explains the need and usage of the plate holder.

The document is a letter from the Director General of Stores requesting that photographic plates be delivered right away to Kodaikanal Observatory.

The document is a letter from William Butler to the Director of Kodaikanal and Madras Observatories, requesting to send the list of telegraphic codewords denoting sizes and designations of various photographic plates required by Kodaikanal Observatory.

The item is a letter from William Butler, Director General of Stores, to the Director of Kodaikanal and Madras Observatories, stating that the photographic plates requested by the Director of Kodaikanal and Madras Observatories have been supplied to Kodaikanal and Madras Observatories by Imperial Dry Plates Company. The quantity of sent items is also mentioned in the letter.

The document is a letter from William Butler, Director General of Stores, to the Director of Kodaikanal and Madras Observatories, Kodaikanal, informing that imperial latern plates required by the Kodaikanal Observatory have been ordered. The product was ordered from Imperial Dry Plate Company, London. The specifications and the quantity of the plates are also mentioned in the letter.

The item is a letter from William Butler to the Director of Kodaikanal and Madras Observatories, Kodaikanal related to the supply of Imperial ordinary plates as requested by the Director of Kodaikanal and Madras Observatories. It is mentioning that that six dozen 5*4 plates were supplied by Messrs. Houghton and Company.

The letter is from William Foster, registrar and superintendent of records, to the Secretary to the Government of India Department of Revenue and Agriculture regarding changes in address. It is to inform that the Solar Physics Observatory, formerly at South Kensington, was moved to Cambridge, and future communications and parcels should be sent to the new address.

The item was a petition submitted by P. R. Chidambara Ayer to The Secretary to the Government of India, Revenue and Agricultural Department, about his salary. The facts of the case have been stated very clearly in the petition. The letter was sent to The Director General of Observatories and the Director of Kodaikanal and Madras Observatories in 1920.