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The fond contains correspondence between E. C. J. Bond, the officer-in-charge, No. 18 party (Magnetic), Survey of India, and the Director of the Kodaikanal and Madras Observatories during 1919-1920. The official letters are about the magnetic observations from the Kodaikanal Magnetic Observatory. The observations have been taken from the Kodaikanal Observatory and used to send to The Survey of India office for scientific purposes. This fond consists of 7 letters sufficient to understand the cooperation between The Survey of India and The Kodaikanal Observatory.

The letter is about John Evershed and Kodaikanal to Kashmir Expedition

The letter is about John Evershed and some of Kashmir Observation

This fond contains materials related to John Evershed that contains general local office materials including letters of all local government and administrations, proceedings, reports to the government of India etc., A large portion of the collection series contains information on observations from various scientists.