Author:
C. Dudley Langford [Charles Dudley Langford] (1905-1969), chemist and mathematician [Sir Richard Dundas Harington (1900-1981), 13th baronet]
Publication details:
27 March and 2 October 1945; both from 16 Henrietta Street, Girvan, Ayrshire [Scotland].
Langford trained as an industrial chemist and was a member of Royal Chemical Society. In later life he turned to mathematics, and published thirty articles in the Mathematical Gazette. One of these (‘Problem’) appeared in 1958 and concerned what came to be known as the Langford Sequence. Its significance is discussed by Martin Gardner, in his ‘Mathematical Magic Show’ (1978). Both items aged and creased, with closed tears, but with text complete and legible. Both are addressed to ‘Dear Sir Richard’ and signed ‘C Dudley Langford’. ONE: 3pp, 12mo. On two leaves.
