S., 30 Braune Blatter, 225 Breon, W., 279-280, 286 Brooke-Hunt, G. L., 172 Brotherhood, F. M., 1-2, 11 BROWN code, 323 Browne, Sir Thomas, 432 Bryant, H. L., 2-3, 4, 47 Bullock, F. W., 317 Bureau du Chiflre, 159 Burke, J. P., 390 Busch, H., 271 Business codes, 422-423 Byrne, J. F., 408-410 C-36, 212 Cabinet Noir, 111 Cablegrams. See Commercial codes Cables, German transatlantic, cutting of, 129 Caesar alphabet, 77 Caesar, J., 77 Caesar substitution, 77, 95, 292, 354, 414, 415 Canada, 183, 266 Canaris, W., 249 Carbonari, 419 Cardano, G., 146 Cardano grille, 281, 283 Cartier, F., 159 Cave, R., 46 Cavendish-Bentinck, V. F. W., 266 C.B., 319-320, 322 Censorship, U.S., 274-289 Central Intelligence Agency, 378, 379, 382, 383, 384, 398 Chamber analysis, 166, 257 Chaocipher, 409, 410 Chase, P. E., 121-122 Chaucer, G., 171 Checkerboard, 76, 121-122, 186, 343, 357-359, 368, 369, 376 See also ADFGVX; Straddling checkerboard
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