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.

The album contains photos of the site study for the Indian Astronomical Observatory (IAO) at Hanle, Ladakh. The Indian Astronomical Observatory (IAO) is a high-altitude astronomy station in Hanle, India, operated by the Indian Institute of Astrophysics. Photos related to the site, natives of Ladakh, construction of the observatory, and some paintings are preserved in this album.

The album contains photos of the garden and buildings in the IIA Bangalore campus. The campus maintains a beautiful garden that is prosperous with diverse fauna and flora. Photographs of different blocks such as the main building, admin office, department of optics, canteen, guest house, and auditorium are arranged after the photos of the IIA garden.

The album contains photos of the initial stages of the Kavalur Observatory campus. Photographs of Director M. K. Vainu Bappu's visit to Kavalur for site inspection and selection for the setting up of the observatory building and workshop. Photos from the construction of 40-inch and 90-inch telescopes, images of albuminization of the 40-inch telescope and the instruments of the telescope can be seen in this album.

The album contains images related to the setting up of the park and garden opposite the Director's office. The pictures of Director R. Cowsik and other IIA staff with the building workers can be seen in this album.

This letter was about the request of the government astronomer to arrange the six rain-gauges for use in the North Arcot district.

The item is a circular from the Meteorological Department describing the rules fixing and use of Symon's Raingauge.

This letter was from the Director of Kodaikanal & Madras Observatory informing about the erection of new buildings for Poona instruments and outside painting of Observatory Domes, the Spectroheliograph building and the magnetic observatory.

This is a reply letter stating that the Director cannot undertake the construction of any new building without the sanction of the Government of India because it is not in the main building of the observatory but a very short distance away

The letter is to the Sub Divisional Officer, PWD, Kodaikanal, requesting to arrange for the painting of the thermometer house, magnetic hut and office room during that year.