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Scope and Contents From the Sub-Series: During his tenure as Secretary of the NYZS Board of Trustees, Osborn oversaw the development and management of the Society’s pavilion at the 1939-1940 World’s Fair in Queens. The bulk of this subseries relates to the financial aspects of this work. There is also correspondence concerning the exhibit’s design and construction, as well as materials related to popular features of the exhibit, which included the Bathysphere in which NYZS’s William Beebe and his collaborator Otis Barton made...