This letter is from Charles. P. Butler, Ag: Director, Kodaikanal & Madras Observatories to the Meteorological Reporter to the Government of India & Director General of Indian Observatories, Simla, informing about the report from the observer at the Periyakulam station, that the fencing around the rain gauge is dilapidated and suggesting to remove the rain gauge to the enclosure of the thermometer shed as the distance from the current site to shed is about 50 yards but it may not be a serious difference from the records.

This letter is from the sub-Division Officer, PWD, Dindigul, to the Ag: Director, Kodaikanal & Madras Observatories, regarding the rain gauge pillar that is already at Periyakulam, the sanctioned Rs.140 for the works and the materials arrived.

The letter is from Charles P. Butler, Ag: Director of Kodaikanal & Madras Observatories, to the Executive Engineer, Madura, requesting to authorize the erection of a new rain-gauge pillar in the Thermometer Shed at Periyakulam. He also gives information on the pillar.

The letter is from Charles P. Butler, Ag: Director of Kodaikanal & Madras Observatories, to The Sub-Divisional Officer, Public Works Department, Dindigul, requesting to arrange with the officer in charge at Periyakulam for collection of sufficient materials for building one small standard base for rain-gauge in the compound of Taluk Cutchery. He wishes that the arrangements be made by when he goes down to Periyakulam And requests to inform him when the preparations are ready.

The letter is from Gilbert T. Walker to The Director of Kodaikanal & Madras Observatories requesting to inform whether the instruments- "Richard's Barograph" and "Do Thermograph" -are still in use at the Periyakulam Observatory and also the dates on which each of these instruments were brought into use at the observatory. The sheet also has the reply to it, which says the instruments were brought on 1st March 1901 and were still in use.

The letter is from offg. Director General of Observatories to Charles Michie Smith regarding the observation taken by the brother of the observer, the resignation of the observer, and asking to supply a statement of changes to be made and a copy of the charge list.

The fond contains correspondence related to the Periyakulam Observatory.

The letter is from Charles P. Butler, Ag: Director of Kodaikanal & Madras Observatories to the Meteorological Reporter to the Government of India & Director Deneral of Indian Observatories in continuation of his letter No.480, requesting to supply one rain measuring glass for 5-inch gauge to Periyakulam Observatory.

The letter is from the Observer at Periyakulam Observatory, stating the list of instruments in the Periyakulam Observatory with the name of their maker. It also says all are in good condition.

The letter is from Solar Physics Observatory to P. N. Sankarakrishna Aiyar, Meteorological Observer, Periyakulam, informing about the closing of Periyakulam Observatory at the end of that month under the instructions of the Director General of Observatories and also the observer's services will be disposed at the end of a month from that day.