'Specification for a Stellar Interferometer' Hanbury Brown's personal and annotated hardback copy of a design study for a stellar interferometer. Contains also a loose typescript 'Provisional schedule of equipment to be supplied', 30 April 1959, and a newspaper clipping about Narrabri, Guardian, 5 April 1966. The design study had been carried out by the Sheffield construction firm Dunford & Elliott Ltd. The instrument was built at Narrabri near Sydney in New South Wales, Australia. In situ assembly of the (mostly) British components began in 1962. See RHB/4. 1966