This reply letter was sent to the Deputy Director of Madras Observatory informing the amount had been recovered from A.A. Narayana Aiyar in three instalments at Rs. 26-10-8 in the pay bills for April, May and June 1913.

This is Reply letter to Mr Adams about working out seismograms so that they adopt the form proposed by the International Commission.

This is a reply letter stating that the Director cannot undertake the construction of any new building without the sanction of the Government of India because it is not in the main building of the observatory but a very short distance away

This is a reply letter referring the previous letter the correct meaning of "Solar Physics Observatory Office portion" and "Engine Room" and also requested to furnish the certificate at an early date as the objection has been pending for over 2 months.

The letter was from Thomas Royds, Assistant Director of Observatory, Kodaikanal to G.C. Simpson, the Imperial Meteorologist, Simla. Through this document, Thomas Royds conveyed a new method for taking the mean wind directions in this letter. The document was written in 1914 from Solar Physics Observatory, Kodaikanal.

This fond contains correspondences related to queries sent to Kodaikanal Observatory.

The cassette on a public lecture by Professor M.K. Chandrashekaran on Biological Clocks in Bats, Mice and Humans.

This item was photo of visit of Prof.S.Chandrasekhar and Mrs.Chandrasekhar along with Prof.M.K.V.Bappu in IIA, Bangalore campus.

The proceeding holds information of the Board of Revenue Settlement, R.NO. 608, on the paper of the letter from C.H. Mounsey to report of the earthquake that was felt at night 3-9 a.m.

The fonds contain posts and telegraph between the telegraph department and the Director of Kodaikanal Observatory