The letter was an acknowledgment of the photoheliograph received and experiences shared by using equatorial telescope to take solar photographs.

This letter is from John Evershed to G. C. Simpson, Director General of Observatories, in reply to D.O. No. 6347 about the visibility of eclipses from India and Mesopotamia in 1920. It was mentioned about the difference between Indian Standard time and Mesopotamian times of the eclipses.

The letter is from G. C. Simpson, imperial meteorologist, to John Evershed, Director of Kodaikanal and Madras Observatories, regarding 2 micrometres. It states that there were two Hilger bills as there were two micrometers filled with a new screw coating, and only one of the bills has been paid for.

The letter was to inform G. S. Chowla the dislikeness of Dr.Gilbert T. Walker for the clamping arrangement made in R.A., and asking for the required arrangement to take make the clamping arrangements right.

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 about informing Gilbert T. Walker of sending a slide of the Nova Acquilae Spectrum with Arctururs above it for comparison taken at the Kodaikanal Observatory on the night of June 19-20.

The letter is from John Evershed to Gilbert T. Walker regarding the rates of the Reifler clock. It states that the Reifler clock in Calcutta runs better than that in Madras.

The letter is from John Evershed to Gilbert T. Walker replying to his letter about the transit room to be built on the Sion hills, he write his suggestions and return the plan diagram.

The letter contains information stating the return of 4-inch lens to Pocock and retaining of 15-inch lens to verify the Venus results.