The photographic slide contains an image of Rajamohan Irulappan village in Kavalur.

These photographic slides contains different images of Mcdonald observatory.

These photographic slides contain compressed pictures of the set-up of the astronomical instruments like Hydrometer, wind instrument, etc. at the top of Mt. Nimmu.

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

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

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 North and South domes of Kodaikanal Solar Observatory and buildings

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

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

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