This fonds consists of photographic slides associated with Ross Laboratory in Secunderabad. One of the images showcases a panoramic view of the Ross Laboratory, while the second image captures the Tableau Memorial dedicated to Ronald Ross.

These photographic plates contain compressed photographs of IIA buildings and astronomical instruments

These photographic slides contain photos of Magnetic Observatory of Kodaikanal, Magnetic recorder room, Magnetic variometer

These photographic slides contain some photographs of Lowell Observatory. It was donated by R.C.Mallik to M. K. Vainu Bappu

These photographic slides contains different images of Mcdonald observatory.

The order is from the Government of Madras to the chairman, the Municipal Council, Kodaikanal, approving the proposal to extend its limits to the observatory buildings and as for the objection from the Director regarding the water supply, the area will be exempted from paying the water tax proviso(b) to section 84 of the Madras District Municipalities Act, 1920.

This letter was written to the Superintendent Engineer from H.G. Nicholson, proposing a new building for the Kodaikanal Observatory to house the instruments transferred from the Poona Observatory.

The letter is to the Secretary of the Government of India about the special arrangements made by the General Superintendent for the despatch of ironwork and by the Executive Engineer for the prompt completion of buildings.

This letter was sent to the Director-General of Observatories, Alipore, Calcutta, from John Evershed, about the anemometer reading at Leh on the 31st December 1920, which was 5.5 miles.

This letter is from Thomas Royds to the Director General of Observatories stating new works regarding new buildings for Poona instruments. In this letter, the Superintending Engineer asked for 10,000 from the Madras Government for buildings.