This item was about the high resolution line sketch spectra captured by John evershed during his experiment at Kodaikanal Observatory. While experimenting, he came across to capturing the high resolution spectra of Altair, Nova Aquila, Arcturus in the observatory. In this sketch, he pictured the resolution spectra that he observed as Umbra for high resolution and Penumbra for low resolution.

This item was about the Sunspot spectra taken by John Evershed, where he discovered that there is a radial outflow of gases in a sunspot. This effect is now known as the "Evershed Effect".

This Letter is from Astronomer Royal to the Director regarding sun photographs for 1911 May 19 and 20

The letter is from Astronomer Royal, Royal Observatory, Greenwich, London, to The Director, Kodaikanal Observatory, Madras, India, requesting to send solar photographs of the mentioned dates as the photographs taken from there are deficient.

The letter was from Charles P. Butler to John Eliot the Meteorological Reporter to the Government of India and Director General of Indian Observatories, Simla, in 1903. The letter is about increasing the power of the apparatus used for sun-spot spectra of Kodaikanal Observatory.

This letter was a request regarding the present state of knowledge about the periodocity of sun spot activity.

The letter was a reply to Evershed saying that there will be no difficulty in dealing with the 26 inch originals and requesting to provide necessary information.

This letter was a reply to the letter discussing definite periodicity in sunspot activity in the mean period being 11.12 years.

The letter was a critisism by Evershed on the assumption of radial outflow of gases with a velocity increasing with heigh above the photosphere, combined with a constant relativity effect.

This letter was with reference to the telegram where mean areas giving better gauge of prominence activity than mean extent are discussed. It also encloses a table of mean areas from 1890 to 1921.