Together 40 pages, 4to and 8vo, most on air letter envelopes. With a large archive of internal memos, Spectorsky's responses to Clarke and related letters from Clarke's agent, most carbons." /> CLARKE, Arthur C. (b. 1917). 27 typed letters signed and 7 autograph letters signed ("Arthur") to A.C. Spectorsky (26) and Hugh Hefner (1), Ceylon and New York, 24 January 1960-2 December 1969. <I>Together 40 pages, 4to and 8vo, most on air letter envelopes</I>. With a large archive of internal memos, Spectorsky's responses to Clarke and related letters from Clarke's agent, most carbons. | Christie's