This letter is from Gilbert T. Walker to the Secretary to the Government of India asking for assistance from the Government in securing the loan for the Kodaikanal Observatory of a prism, which was in charge of the Joint Permanent Eclipse committee of the Royal Society and the Royal Astronomical Society.

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

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 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.

This letter was reply to letter dated Oct. 29 about lenses. He was requesting 15-inch, 12-inch, 4-inch and a lens of about 7 ft. focus lenses to be send from Nizamaiah Observatory to Kodaikanal Road Station mentioning the purposes for which it requires. In addition the item has the telegram messages written by Evershed to Pocock and vice versa.

This letter from J. Evershed to the Director-General of Stores regarding the 30-degree prism ordered for Kodaikanal M6145 Hilger, which should not be sent out for trial as judged by Mr Shackleton, the prism does not meet the requirements of the specification and should be rejected.

This letter is from K.D. Naegamvala to Dr G.T. Walker regarding lending two prisms to Kodaikanal, which was asked to be forwarded by passenger train where transit charges would also be considerable.