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The fond contain correspondence regarding the Astronomical Observatory at Lahore. The letter is from the Director of Kodaikanal & Madras Observatories to the Registrar, Panjab University, Lahore, giving suggestions for the proposed Astronomical Observatory to be built in Lahore. The letter has suggestions about transit instruments and a 7-inch equatorial telescope. A sketch of the roofing complex is also attached.

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 compliation of Photographs, Newspaper Clippings and Correspondence to M.K. Vainu Bappu and Institutes

The fond contain compilation of Pogson's observations and drawing

The fond contain compilation of Photographs, Newspaper Clipping, Pamphlets, Correspondence to Chinthamani Ragoonatha Chary and Transit of Venus.

The fond contain compilition of Newspaper clipping, photographs and graphs of Uranus ring observed at Kavalur observatory

Cassettes related to IIA

The fond contains 3 books of Astronomical observations made at the honorable the East India Company's Observatory at Madras

Astronomical Observations Madras, 1792-94 was known as the "Annual Report of 1792". The manuscript volume was divided into three parts. The first part gives a detailed description of the observatory building supplemented with 12 hand-coloured figures of the various sections of the building. Figure 1 is the picture of the Madras Observatory. Parts 2 and 3 record the observations taken for the years 1793 and 1794, respectively.

Johannes Kepler's Astronomia Nova, published in 1609, was the oldest book available in the archives. It contains the results of Kepler's ten-year-long investigation of the motion of Mars. Where previous astronomers had relied on geometric models to explain the observed positions of the planets, Kepler discovered physical causes for planetary motion. Before Kepler, Nicolaus Copernicus proposed in 1543 that the Earth and other planets orbit the Sun. Kepler was the first astronomer to prove this conjecture with rigorous scientific arguments. This Volume has 336 pages and is in fairly good condition.