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The book "An Elementary Treatise on the Lunar Theory with a Brief Sketch of the History of the Problem" was written by Hugh Godfray. Hugh Godfray (c1821-1877) first published his treatise in 1853, a year after he graduated from St. John’s College. Lunar theory would become central to George Darwin’s work, and he went on to form crucial theories regarding lunar acceleration, earth retardation, the earth-moon system, and the genesis of the moon. It was published in 1987

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

The fond contain newspaper clippings on Astronomy: Ionosphere reading of stars. This states that the Indian astrophysicists propose that the Earth's ionosphere disturbances caused by X-ray bursts (XAY BIRT) could signal stellar activity. This alerts astronomers to phenomena like Sc X1's X-ray emissions. Detecting the impact of stars on the ionosphere is challenging due to background interference, with debates on ionization and magnetic field effects. Dr. Sastri and Dr. Murthy's experimental study reveals a significant magnetic field increase during a Sc X1 flare. Understanding the ionosphere's response to X-rays, including gamma rays from catastrophic stellar events, may offer a distinctive detection method for monitoring space events, aiding astronomers in decoding cosmic phenomena efficiently.

This fond consist of newspaper clippings on the discoveries that was made from the indian soil in early 17th century.

The Book On the discovery of The Periodic Law and on relations among the atomic weights written by John Alexander Reina Newlands was published in 1884. It has 70 pages.

These Photographic slides contain some astronomical events like gaseous pillars, star birth clouds.

The book Stellar Motions by William Wallace Campbell in 1913 has about 176 pages. It delves into the movement of stars.

The fond contains Results of observations of the fixed stars made with the Meridian Circle at the Government Observatory , Madras