The letter was sent by an anonymous person to Gilbert T. Walker in 1905. It is mentioning that this letter was sent with two memos and the Madras rainfall tables (containing the daily averages for 80 years). The letter also notes the about the unfavourable weather and the freshly constructed lathe for mechanical work.

This letter was sent to Gilbert T. Walker from John Evershed to compare the sunshine with the average of ten years of sunshine with Kodaikanal and Srinagar. Also, he mentioned he wanted to visit Kashmir in a sunny month to get perfect observations.

This letter was sent to Gilbert T. Walker if the object glass lens can be lent, he would use it. He also mentioned he requires a substitute for the 12-inch photovisual lens feeding the spectroheliograph.

The letter is to Gilbert T. Walker regarding 'Air blast'.

This is a letter to Gilbert Thomas Walker in regards of time transmission.It informs about the time transmission signals which are received on a relay and further details surrounding it.

This letter was written to Gilbert Thomas Walker, the Director General of Observatories from Secretary to Government, Bombay Castle, Educational Department, in reply to the letter regarding removing the revolving dome of Poona Observatory to Kodaikanal. In this letter, it was stated a plan and estimate for another roof for the observatory building.

This is a letter to His Majesty's under secretary of State for India for a loan of a prism, which is in the charge of the Joint Permanent Eclipse Committee of the Royal Society and the Royal Astronomical Society. This copy of the letter was forwarded to the Director General of Observatories for information.

This letter was sent to J. L. Simonsen regarding the joining of Mr Narayana Aiyar, and The Director of Kodaikanal And Madras Observatories got some instructions from Dr Walker that some Meteorological tabulation works in future need to be done.

The letter is from The Director General of Observatories to John Evershed, Director Kodaikanal and Madras Observatories referring to the estimate of special repairs, saying that the sum is beyond the power of sanction and it will be difficult to get work done this year unless a strong case as the money is scarce.

This letter was sent to John Evershed, enclosing the velocities of the earth relative to the sun and a photograph of the Cu lines at 4480 and 4509. It is mentioned that the cost of the plates illustrating the bulletin was £3.7.9(500 copies), but the details had been sent to the Accountant General.