These Photographic slides contain some astronomical events of planetary nebula named NGC 2346 and NGC 6894 in Cygnus and the solar system and 10 billion years life cycle of our Sun. These slides look like negative photographs.

These photographic slides contain photos of Solar eclipse, Solar corona and J.C Bhattacharya.

These photographic slides contain photos of the Solar Corona, Spectrograph under the 60-inch tower- 1980 Eclipse, Partial phase on Feb 16, 1980, Flash Spectra, Khartoum, 1952 and White light corona.

This fonds comprises photographic slides showcasing various snake parks. The images offer a glimpse into different aspects of these parks, including a cobra snake park in 1971, a presentation on Russel's viper snake park, another snapshot from a cobra snake park in 1977, and a depiction of the intriguing saw-scaled viper.

These photographic slides contain Sidney Harris astronomical cartoons.

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 the Mexico Eclipse camp in 1970, the solar corona in 1980, and the Spectrograph well.

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

These photographic slides contain photographs of J.C. Bhattacharya related to some meetings, conferences, or observations.