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Programme for the seventh symposium held by the Zoological Society of London and arranged in collaboration with the Committee for Biological Acoustics on biological acoustics

Collection of biographical notes on Eyton; copies, transcriptions and abstracts of letters to and from Eyton

Contract between ZSL and the Department for International Development

Correspondence between Lieutenant Binfield and Geoffrey Marr Vevers regarding a Royal Bengal Tiger offered to the Zoological Society of London

Bills and receipts received by James Thompson in relation to his mission to Calcutta