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The letter is from the Director of Telegraph Engineering to the Director of Kodaikanal Observatory requesting to provide the magnetograms of any terrestrial magnetic storm of 22nd and 23rd March 1920. And the reply to it from the Director.

The letter is from the Director of Telegraph Engineering to the Director of Kodaikanal Observatory, thanking for the previously provided magnetograms and enquiring whether it is correct that the violet disturbance in the horizontal force continued on the 14th and 15th of May according to the traces in the magnetogram.

The letter is from the Director of Telegraph Engineering to the Director of Kodaikanal Observatory requesting to provide the magnetograms for the whole duration of the magnetic storm started at 1:30 PM on 14th May 1921.

The letter is from the Electrician of Govt. Telegraph Department to Director of Solar Physics Observatory enquiring if the measurements of natural currents made on telegraph lines during magnetic disturbance can be advantageous and, if so, asking to warn the telegraph department to make observations when needed.

Observation summaries of July 28 to 31, Aug 1 to 19 and Dec 21 to 31.

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

The item contains six telegraphs from the Telegraph Director in Bombay, with four directed towards Kodaikanal and two towards Chetput(Chennai). One is a request for a copy of the magnetogram taken during the magnetic storm.

The item is a telegraph about telegraph lines affected by magnetic storm