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Plan, section and elevation drawings relating to the construction of the ZSL Main Offices (and Library) at Regent's Park, dated January 1909 to March 1910. Included are details of elements reused from Hanover Square. Alterations to Library, 1964-1967. Some hand annotations and doodles. Architect/engineer/designer: J Belcher, Architect; Werner, Pfleiderer & Perkins Ltd, Engineers; J Jeffreys & Co, Heating and Ventilation Engineers; A Smith & Stevens, Lift Engineers. 

The Northern Aviary at London Zoo, widely known as the Snowdon Aviary, was built between 1962-1964 and opened in 1965. Lord Snowdon was the designer of the Aviary.

Plans for the modification of an enclosure to be filmed in a scene in the film Harry Potter and the Philosopher's Stone .