1. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 15 January 1951 Archival Collection: Profiles in Science
2. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 19 June 1950 Subject(s): Cell Culture Techniques Archival Collection: Profiles in Science
3. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 14 March 1951 Archival Collection: Profiles in Science
4. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 24 September 1951 Archival Collection: Profiles in Science
5. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 October 1951 Archival Collection: Profiles in Science
6. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 25 October 1951 Archival Collection: Profiles in Science
7. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 8 November 1951 Archival Collection: Profiles in Science
8. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 14 November 1951 Archival Collection: Profiles in Science
9. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 26 November 1951 Archival Collection: Profiles in Science
10. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 29 January 1952 Archival Collection: Profiles in Science
11. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 19 February 1952 Archival Collection: Profiles in Science
12. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 28 February 1952 Archival Collection: Profiles in Science
13. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 27 March 1952 Archival Collection: Profiles in Science
14. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 May 1952 Archival Collection: Profiles in Science
15. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 19 May 1952 Archival Collection: Profiles in Science
16. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 1 October 1952 Archival Collection: Profiles in Science
17. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 27 May 1952 Archival Collection: Profiles in Science
18. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 13 November 1952 Archival Collection: Profiles in Science
19. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 19 November 1952 Archival Collection: Profiles in Science
20. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 25 November 1952 Archival Collection: Profiles in Science
21. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 8 December 1952 Archival Collection: Profiles in Science
22. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 24 December 1952 Archival Collection: Profiles in Science
23. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 20 January 1953 Archival Collection: Profiles in Science
24. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 20 February 1953 Archival Collection: Profiles in Science
25. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 March 1953 Archival Collection: Profiles in Science
26. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 23 March 1953 Archival Collection: Profiles in Science
27. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 15 April 1953 Archival Collection: Profiles in Science
28. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 16 April 1953 Archival Collection: Profiles in Science
29. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 May 1953 Archival Collection: Profiles in Science
30. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 May 1953 Archival Collection: Profiles in Science
31. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 May 1953 Archival Collection: Profiles in Science
32. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 11 May 1953 Archival Collection: Profiles in Science
33. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 15 May 1953 Archival Collection: Profiles in Science
34. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 18 May 1953 Archival Collection: Profiles in Science
35. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 20 May 1953 Archival Collection: Profiles in Science
36. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 22 May 1953 Archival Collection: Profiles in Science
37. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 27 May 1953 Archival Collection: Profiles in Science
38. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 1953 Archival Collection: Profiles in Science
39. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 2 June 1953 Archival Collection: Profiles in Science
40. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 22 June 1953 Archival Collection: Profiles in Science
41. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 23 June 1953 Archival Collection: Profiles in Science
42. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 1 July 1953 Archival Collection: Profiles in Science
43. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 14 August 1953 Archival Collection: Profiles in Science
44. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: August 1953 Archival Collection: Profiles in Science
45. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 28 August 1953 Archival Collection: Profiles in Science
46. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 18 February 1954 Archival Collection: Profiles in Science
47. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 March 1954 Archival Collection: Profiles in Science
48. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 21 June 1954 Archival Collection: Profiles in Science
49. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 29 June 1954 Archival Collection: Profiles in Science
50. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 July 1954 Archival Collection: Profiles in Science
51. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 24 September 1954 Archival Collection: Profiles in Science
52. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 10 November 1954 Archival Collection: Profiles in Science
53. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 28 January 1955 Archival Collection: Profiles in Science
54. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 February 1955 Archival Collection: Profiles in Science
55. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 22 March 1955 Archival Collection: Profiles in Science
56. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 2 May 1955 Archival Collection: Profiles in Science
57. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 21 October 1955 Archival Collection: Profiles in Science
58. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 17 November 1955 Archival Collection: Profiles in Science
59. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 15 December 1955 Archival Collection: Profiles in Science
60. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 3 June 1956 Archival Collection: Profiles in Science
61. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 4 January 1956 Archival Collection: Profiles in Science
62. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 10 January 1956 Archival Collection: Profiles in Science
63. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 17 January 1956 Archival Collection: Profiles in Science
64. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 21 June 1956 Archival Collection: Profiles in Science
65. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 18 April 1956 Archival Collection: Profiles in Science
66. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 25 April 1956 Archival Collection: Profiles in Science
67. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 November 1956 Archival Collection: Profiles in Science
68. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 15 January 1957 Archival Collection: Profiles in Science
69. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 5 April 1957 Archival Collection: Profiles in Science
70. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 20 August 1958 Archival Collection: Profiles in Science
71. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 5 September 1958 Archival Collection: Profiles in Science
72. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: September 1958 Archival Collection: Profiles in Science
73. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 24 September 1958 Archival Collection: Profiles in Science
74. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 11 August 1960 Archival Collection: Profiles in Science
75. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 20 September 1960 Archival Collection: Profiles in Science
76. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 11 January 1961 Archival Collection: Profiles in Science
77. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 1 February 1961 Archival Collection: Profiles in Science
78. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 8 March 1961 Archival Collection: Profiles in Science
79. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 6 June 1962 Archival Collection: Profiles in Science
80. Letter from P. R. Edwards to Joshua Lederberg Publication: Produced: 26 June 1962 Archival Collection: Profiles in Science