This letter was about sending a copy of the "Preliminary note on Srimangal earthquake of 8th July 1918".

The letter informs about the handing over the reports of different observers in Northern India with regard to the earthquake of the 4th of April

This letter is from Gilbert T. Walker to John Evershed about seismic records for changing the mistake in Seismic records in printed forms and in the Monthly Weather Reviews.

The letter is about sending a copy of the seismic disturbances obtained at Alipore observatory

This letter is about information of sending a copy of the seismic disturbances obtained at Alipore observatory

This letter was with reference to the change system of minimum and maximum temperature at Madras Observatory.

This letter is about sending of a copy of the recording of the Seismic disturbances obtained from the Seismograph in use at the Alipore Observatory for the half year from 1st January to 30th June 1906 together with photocopies of the traces for dates in June

This letter is about sending a copy of the record of the seismic disturbances obtained from the seisomograph in use at the Alipore Observatory for the half year from 1st July to 31st December 1911 together with photo copies.

This letter from J. Patterson to the Director asking a favour with a detailed explanation of the process of photocopying of the Seismograph

This letter informs about the occurance of earthquake on 8th February 1900 at 3 and 3:10a.m.