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 slides contain photos of Bhavnagar 20-inch Dome, Hydrolic gate from spectroheliograph, etc.

These photographic slides contain pictures of sightseeing on the way to Leh from Delhi. It contains survey pictures of the West hill of Mt. Nimmu and the base camp of Mt. Nimmu, the Himalayan ranges, and the set-up on the East hill of Mt. Nimmu.

These photographic slides contain pictures of sightseeing on the way to Leh from Delhi. It has photos of the beautiful Indus Valley, the Indus River, a cloud-free clear sky for observation, and the East hill of Mt. Nimmu top.

These Photographic slides contain the observations of the survey from the Mt. Nimmu base.

These photographic slides contain the pictures of sightseeing of Palras, Greece organised by IAU assembly

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

These photographic slides contain photos of North and South domes of Kodaikanal Solar Observatory and buildings

These photographic slides contain photos of the Kodaikanal solar observatory, North and South domes, solar tower and tunnel, changing of dome and old 15'' dome.

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