London: Victor Gollancz, 1963. First edition. The classic Cold War spy novel. Near fine with small dent and faint stain on spine not affecting lettering and light stains to margins pp.25-36; in near fine price-clipped dust jacket. Together with AUTOGRAPH LETTER SIGNED by Le Carre to Zimmerman in which he discusses Oleg Kalugin, the KGB General turned critic of Russia, Zimmerman's stories about him, and boxing with Hemingway (Zimmerman's former sparing partner) or Norman Mailer, and his own encounter with a school-yard bully, "A boy called Simmons knocked me out at school & my house-master accused me of cowardice. He was absolutely right but which was more cowardly: to knock out Simmons or be KO'd by him?" Two-pages on Le Carre's Conqueror watermarked laid paper letterhead with his checkmark above his Cornwall address dated "17 March '95" and signed "Best, John Le Carre." Fine with creases from folding, in original mailing envelope. Also includes Zimmerman's posthumously published memoir, DR. Z: THE LOST MEMOIRS OF AN IRREVERENT FOOTBALL WRITER.