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61. Letter from Francis Crick to James D. Watson

62. Letter from James D. Watson to Francis Crick

64. Letter from Alexander Goldfarb to Francis Crick

65. Letter from Francis Crick to Henry M. Sobell

66. Letter from Henry M. Sobell to Francis Crick

67. Letter from Alexander Rich to Francis Crick

68. Compartments and Polyclones in Insect Development

69. Kinky Helix