TELECOMMUNICATION

153pp., 8vo. In blue wraps with blue cloth tape on spine. In good condition, in aged wraps. 27 papers, printed before the conference (with number 7 'unavailable at time of printing'). Scarce: the only 'hard' copies (as opposed to 'electronic resources') on COPAC at the British Library, Sheffield and Cardiff. With 15pp. A4 'Attendance Lists', dated 7 to 8 February 1996, with photocopies of the names, addresses and 'Affiliation' of delegates. From the J. P. Hawker papers, and annotated throughout by him.

Folio, 1 p. A printed document, with specific details typed in. Fair, on aged paper, with some wear to extremities. Signed 'Alan J. Macnab', and witnessed by G. Perry of Tokenhouse Yard. A pioneer in the field of television, Radiovisor Parent Co., Ltd. was formed on 31st May, 1928, with a capital of £276500, and owned the rights in a selenium light bridge patented in 1927 and 1928. It had made history in 1927 with the invention of the first ever infra-red beam, this technology being used to protect the Shah of Persia's jewels at an exhibition in 1929.