The item was about M.K.Vainu Bappu was elected as President of the International Astronomical Union, which has 50 countries as a member.

This item was about the Sunspot spectra taken by John Evershed, where he discovered that there is a radial outflow of gases in a sunspot. This effect is now known as the "Evershed Effect".

This item was about the Donohoe medal received by Prof.M.K.Vainu Bappu in commemoration of the discovery of a comet on 2 July 1949.

This item was about total solar eclipse of 18th August 1868. At Masulipatnam Pogson detected the hydrogen line emission, with a spectroscope. He saw a bright yellow line near the position of D lines of Sodium. The line originated from hitherto unknown element later termed as helium after the source of earliest detection. Hand coloured sketch of the solar spectrum during the Total Solar Eclipse of 1868. Hand coloured picture of the sun before and after the total solar eclipse 1868.

The book General Astronomy was written by ?Sir Harold Spencer Jones. It was published in ?1922. This book contains 392 pages and covers various topics in astronomy. The topics mentioned in the book are related to ?celestial bodies, planetary motion, telescopes, and the solar system. It also includes information on stars, galaxies, and other astronomical phenomena.

This letter was about the foundation stone of planetarium laid by Bappu, MKV in Bangalore.

This item was about the photographic coverage of flag hoisting ceremony conducted at Kavakur Observatory.

The cassette contains a lecture on felicitation of Prof. R. Cowsik

The item was about the original glass plate that recorded the "Evershed Effect" in 1909.

Earth, Moon and Planets was a book written by Fred Lawrence Whipple and originally published in 1947. It has 302 pages. The book covers various aspects of the Earth, Moon, and planets within our solar system, like the physical characteristics of these bodies, their orbits, geological features, atmospheric properties, and the processes that shaped them.