The cassette on a public lecture by Professor M.K. Chandrashekaran on Biological Clocks in Bats, Mice and Humans.

The cassette on a public lecture titled Einstein's life and legacy by Professor Mukunda at IIA Auditorium.

The cassette is about a one-day seminar on the world year of physics that is held at IIA Auditorium.

Observation summaries of July 28 to 31, Aug 1 to 19 and Dec 21 to 31.

The cassette contains lectures delivered by Prof. S. Ganesh (PRL), Prof. D. Bhattacharya (RRI) and R. Srianand (IUCAA)

The cassette contains a 10 minutes lecture delivered by Prof. Sreekantan

The album contains photographs of the Bangalore and Kodaikanal campuses library of the Indian Institute of Astrophysics. Photographs of the reading area, serial display, stacks, and some of the presentations held in the library area are preserved in the album.

The fond contain correspondance of M. K. Vainu Bappu with C. V. Raman and mentors, donated by Mrs. Yemuna Bappu to IIA archives.

A Treatise on Spherical Astronomy by Robert Stawell Ball was a work on positional or spherical astronomy. It was first published in 1908. It has 506 pages.The book covers various areas of study, including fundamental formulae, determination of coordinates, atmospheric refraction, the theory of cartography, and more. It assumes a good level of geometry and trigonometry knowledge from readers.

These photographic slides contain Sidney Harris astronomical cartoons.