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.

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.

John Evershed, Director of Kodaikanal & Madras Observatory, wrote this letter to Gilbert T. Walker, assuming they might be getting the prism from Poona Observatory. He mentioned sending correspondence about the new micrometer and a specification. He devised another much simpler method of reducing moonlight comparable with 1st magnitude stars, which seems quite successful. He also proposed purchasing a Hartmann machine from private funds to save time and trouble.

The letter was an instruction for using the repaired lens and asking to send a complete telescope to compare and make the repairing process simple.

The letter is from John Evershed to Messrs Adam Hilger regarding an order for three 60-degree flint prisms of the highest defining quality, two pieces of plane glass highest quality surfaces with one side polished, two pieces of plane parallel blue or green glass of good optical quality transmitting blue light but absorbing violet and ultra-violet. The letter mentions that the bill should be sent to the Director General of Observations in Simla, India.

The letter is from John Evershed to Messrs T. Cooke and Sons Ltd regarding a 12-inch photovisual lens. It states the condition after cleaning and testing.

This letter is from John Evershed to Mr Bhaskaran about the instructions to pack the 15-inch lens in a large case. He also mentioned that he had put castor oil between the component lenses to keep them perfectly adjusted and saved about 8 percent of light otherwise lost by reflection.

This letter contains information about testing of the 15 inch lens on stars etc and finding something wrong in color correction.