The letter is from Landi Kotal to the Director of Kodaikanal and Madras Observatories regarding a Query related to standard time. A question was asked about the erecting of a helio-chronometer. Attached to the letter is an observation sheet indicating standard times.

This is a Letter from L.D Swamikannu Pillai to the director of the solar physics observatory regarding a strange sound produced at Seetharampuram Udayagiri taluk. It is reply stating that an eye sketch of the locality is submitted and mentions some of the villages where the sound is reported. It also states that the sound is loudest at Pandranga, Narayanpet and Seetharampuram.

This is a Letter from L.D Swamikannu Pillai to the director of the solar physics observatory regarding a strange sound produced at Seetharampuram Udayagiri taluk. It also forwards a copy of the report from the tahsildar. This item also contains a reply to the query from the Director of Kodaikanal and Madras Observatories stating that the strange sounds may be produced underground and may be of the same nature as the sounds heard in the Ganges. The reply also points out that if any reports are available from the surrounding villages to determine from which place is the sound loudest.

This is a Letter from L.D Swamikannu Pillai to the director of the solar physics observatory regarding a strange sound produced at Seetharampuram Udayagiri taluk. It also forwards a copy of the report from the tahsildar.

This letter was about the sanction of 9 months of privilege leave to C. M. Smith with effect from the 1st April 1907 and also the arriving of Evershed's in India

This letter is from M. Brown to the director asking for pay Rs. 400 for the stock articles and estimation for fencing the assistant director's quarters compound

This letter is from M. Brown to the Director for estimate of Rs. 1750 for constructing quarters for the photographic Assistant

The letter is from M. Brown, Executive Engineer, to The Director, Kodaikanal Observatory, asking his opinion on using the Observer's house at Periyakulam for storing materials.

The letter is a copy of a letter from M. Brown to the Chief Engineer, Public Works Department, Madras, forwarded to Charles Michie Smith. It says about the sliding roof at the Kodaikanal Observatory.

This letter was to inform Dr.Vainu Bappu that Indian National Science Academdy has to decided to award S. N. Bose medal to M. K. Vainu Bappu for the year 1983.