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Showing results for 1 - 100 of 937 Leo Szilard Papers 1950s

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  1. Leo Szilard, "Bomb Stalemate." From Livingston

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: January 16, 1958
    • Format: sound recording-nonmusical
  2. After dinner speech at Pugwash, edited by John Kaar 

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: August 7, 1957
    • Format: sound recording-nonmusical
  3. Leo Szilard and woman speaking in Hungarian

    • Collection: Leo Szilard Papers
    • Date: between 1940 and 1964
    • Format: sound recording-nonmusical
  4. After dinner speech at Pugwash, edited by John Kaar. Letter to New York Times on Health Insurance

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1957
    • Format: sound recording-nonmusical
  5. Chemostat 

    • Collection: Leo Szilard Papers
    • Date: between 1948-1969
    • Format: image
  6. General Atomic, a division of General Dynamics Corporation 

    • Collection: Leo Szilard Papers
    • Date: between 1950 and 1969
    • Format: image
  7. Moon Image

    • Collection: Leo Szilard Papers
    • Name: NASA
    • Date: between 1950 and 1969
    • Format: image
  8. Szilard Crater on the Moon

    • Collection: Leo Szilard Papers
    • Name: NASA
    • Date: between 1950 and 1969
  9. Drawing of Leo Szilard by his father, Louis Szilard - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- Portraits
    • Date: 1954
    • Format: image
  10. Drawing of Leo Szilard by his father, Louis Szilard - 1

    • Collection: Leo Szilard Papers
    • Date: between 1950 and 1960
    • Format: image
  11. Portrait of Leo Szilard, profile - 1 oversize

    • Collection: Leo Szilard Papers
    • Name: Binz, Tita; Szilard, Leo -- Portraits
    • Date: 1957
  12. Portrait of Leo Szilard, front facing - 3

    • Collection: Leo Szilard Papers
    • Name: Binz, Tita; Szilard, Leo -- Portraits
    • Date: 1957
  13. National Anticommunist Union of Italy Membership Certificate 

    • Collection: Leo Szilard Papers
    • Date: December 19, 1959
    • Format: text
  14. Portrait: Leo Szilard, London - 1

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  15. Leo Szilard at the Third Pugwash Meeting - 3

    • Collection: Leo Szilard Papers
    • Name: Binz, Tita; Pugwash Conference (3rd : 1958 : Kitzbühel, Austria); Watson-Watt, Robert Alexander, Sir, 1892-1973; Brown, Harrison, 1917-1986; Feld, Bernard Taub, 1919-; Grodzins, Morton; Szilard, Leo
    • Date: 1958
    • Format: image
  16. Second Pugwash Meeting. Quebec, Canada - 19

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
  17. Second Pugwash Meeting. Quebec, Canada - 18

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Leghorn, Richard S.; Pauling, Linus, 1901-1994; Eaton, Ann Kinder; Weizsäcker, Carl Friedrich, Freiherr von, 1912-2007; Topchiev, A. V. (Aleksandr Vasil'evich)
    • Date: 1958
  18. Second Pugwash Meeting. Quebec, Canada - 13

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Pauling, Linus, 1901-1994; Rotblat, Joseph, 1908-2005; Higinbotham, William A.; Wiesner, Jerome B. (Jerome Bert), 1915-1994; Topchiev, A. V. (Aleksandr Vasil'evich); Rabinowitch, Eugene, 1901-1973; Eaton, Cyrus Stephen, 1883-1979
    • Date: 1958
  19. Second Pugwash Meeting. Quebec, Canada - 12

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Grodzins, Morton
    • Date: 1958
  20. Second Pugwash Meeting. Quebec, Canada - 11

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Leghorn, Richard S.; Weizsäcker, Carl Friedrich, Freiherr von, 1912-2007
    • Date: 1958
  21. Second Pugwash Meeting. Quebec, Canada - 2

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Shapley, Harlow, 1885-1972
    • Date: 1958
  22. Birthplace of the atomic age ceremony: Len O'Conner interviews Leo Szilard

    • Collection: Leo Szilard Papers
    • Name: University of Chicago; O'Connor, Len; Szilard, Leo
    • Date: 1953
    • Format: image
  23. Birthplace of the atomic age ceremony: workers removing plaque

    • Collection: Leo Szilard Papers
    • Name: University of Chicago
    • Date: 1953
    • Format: image
  24. Birthplace of the atomic age ceremony: Leo Szilard and Norman Hilberry

    • Collection: Leo Szilard Papers
    • Name: University of Chicago; Szilard, Leo; Hilberry, Norman
    • Date: 1953
    • Format: image
  25. Birthplace of the atomic age: Leo Szilard

    • Collection: Leo Szilard Papers
    • Name: University of Chicago; Szilard, Leo
    • Date: 1953
    • Format: image
  26. Leo Szilard in Estes Park

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1955-04-01
    • Format: image
  27. Leo Szilard in Colorado - 7

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  28. Leo Szilard in Denver, Colorado - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: Early 1950s
    • Format: image
  29. Leo Szilard in Colorado - 5

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  30. Leo Szilard in Colorado - 4

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1956-01-01
    • Format: image
  31. Leo Szilard in Colorado - 3

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  32. Leo Szilard in Denver, Colorado - 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1953-01-01
    • Format: image
  33. Leo Szilard, Stead Ranch, Colorado

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  34. Leo Szilard in Colorado - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  35. Leo Szilard in Colorado - 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  36. Szilard Family with Kevin, Alan, and Brian

    • Collection: Leo Szilard Papers
    • Name: Szilard, Gertrud Weiss
    • Date: 1959
    • Format: image
  37. Baby photo - Brian

    • Collection: Leo Szilard Papers
    • Date: 1959-02-01
    • Format: image
  38. Portrait: Leo Szilard, London - 13

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  39. Portrait: Leo Szilard, Denver, Colorado - 2

    • Collection: Leo Szilard Papers
    • Name: Kaspar, John; Szilard, Leo -- Portraits
    • Date: Early 1950s
    • Format: image
  40. Portrait: Leo Szilard, Denver, Colorado - 1

    • Collection: Leo Szilard Papers
    • Name: Kaspar, John; Szilard, Leo -- Portraits; Muelle, Willi
    • Date: Early 1950s
    • Format: image
  41. Portrait: Leo Szilard, front facing - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  42. Portrait: Leo Szilard, profile with caption

    • Collection: Leo Szilard Papers
    • Name: Binz, Tita; Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  43. Portrait: Leo Szilard, profile - 1

    • Collection: Leo Szilard Papers
    • Name: Binz, Tita; Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  44. Portrait: Leo Szilard, Lobby Dupont Plaza Hotel; Washington; DC

    • Collection: Leo Szilard Papers
    • Name: Bubly, Ester; Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  45. Leo Szilard at the Third Pugwash Meeting - 2

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (3rd : 1958 : Kitzbühel, Austria); Szilard, Leo
    • Date: 1958
    • Format: image
  46. Leo Szilard at the Third Pugwash Meeting - 1

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (3rd : 1958 : Kitzbühel, Austria); Szilard, Leo
    • Date: 1958
    • Format: image
  47. Second Pugwash Meeting. Quebec, Canada - 21

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Pauling, Linus, 1901-1994; Wiesner, Jerome B. (Jerome Bert), 1915-1994; Higinbotham, William A.
    • Date: 1958
    • Format: image
  48. Second Pugwash Meeting. Quebec, Canada - 20

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Eaton, Cyrus Stephen, 1883-1979; Rabinowitch, Eugene, 1901-1973; Hodgkin, Dorothy, 1910-1994; Topchiev, A. V. (Aleksandr Vasil'evich)
    • Date: 1958
    • Format: image
  49. Second Pugwash Meeting. Quebec, Canada - 17

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Rabinowitch, Eugene, 1901-1973; Topchiev, A. V. (Aleksandr Vasil'evich); Grodzins, Morton; Rotblat, Joseph, 1908-2005; Pauling, Linus, 1901-1994
    • Date: 1958
    • Format: image
  50. Second Pugwash Meeting. Quebec, Canada - 16

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Rabinowitch, Eugene, 1901-1973; Topchiev, A. V. (Aleksandr Vasil'evich); Rotblat, Joseph, 1908-2005; Szilard, Leo
    • Date: 1958
    • Format: image
  51. Second Pugwash Meeting. Quebec, Canada - 15

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  52. Second Pugwash Meeting. Quebec, Canada - 14

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Topchiev, A. V. (Aleksandr Vasil'evich); Rabinowitch, Eugene, 1901-1973; Rotblat, Joseph, 1908-2005
    • Date: 1958
    • Format: image
  53. Second Pugwash Meeting. Quebec, Canada - 10

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Eaton, Ann Kinder; Grodzins, Morton; Eaton, Cyrus Stephen, 1883-1979
    • Date: 1958
    • Format: image
  54. Second Pugwash Meeting. Quebec, Canada - 9

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  55. Second Pugwash Meeting. Quebec, Canada - 8

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Eaton, Cyrus Stephen, 1883-1979; Eaton, Ann Kinder
    • Date: 1958
    • Format: image
  56. Second Pugwash Meeting. Quebec, Canada - 7

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Higinbotham, William A.
    • Date: 1958
    • Format: image
  57. Second Pugwash Meeting. Quebec, Canada - 6

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  58. Second Pugwash Meeting. Quebec, Canada - 5

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  59. Second Pugwash Meeting. Quebec, Canada - 4

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec); Pauling, Linus, 1901-1994
    • Date: 1958
    • Format: image
  60. Second Pugwash Meeting. Quebec, Canada - 3

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  61. Second Pugwash Meeting. Quebec, Canada - 1

    • Collection: Leo Szilard Papers
    • Name: Pugwash Conference (2nd : 1958 : Lac Beauport, Québec)
    • Date: 1958
    • Format: image
  62. Leo Szilard and Max Delbruck, Cold Spring Harbor

    • Collection: Leo Szilard Papers
    • Name: Delbrück, Max; Szilard Leo
    • Date: 1950
    • Format: image
  63. Leo Szilard in Cold Spring Harbor - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  64. Leo Szilard in Cold Spring Harbor - 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  65. Leo Szilard in, Long Island, NY

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  66. Leo Szilard in Colorado - 11

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  67. Leo Szilard in Colorado - 10

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  68. Leo Szilard in Colorado - 9

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  69. Leo Szilard in Colorado - 8

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  70. Leo Szilard in Colorado - 6

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  71. Leo Szilard in Rocky Mountain National Park

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: 1950
    • Format: image
  72. Leo and Gertrud Weiss Szilard, outside

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo; Szilard, Gertrud Weiss
    • Date: between 1950 and 1964
    • Format: image
  73. Leo Szilard and others

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1950 and 1964
    • Format: image
  74. Brian Szilard as an infant

    • Collection: Leo Szilard Papers
    • Date: 1959
    • Format: image
  75. Portrait: Leo Szilard, London - 12

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  76. Portrait: Leo Szilard, London - 11

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  77. Portrait: Leo Szilard, London - 10

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  78. Portrait: Leo Szilard, London - 9

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  79. Portrait: Leo Szilard, London - 8

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  80. Portrait: Leo Szilard, London - 7

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  81. Portrait: Leo Szilard, London - 6

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  82. Portrait: Leo Szilard, London - 5

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  83. Portrait: Leo Szilard, London - 4

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  84. Portrait: Leo Szilard, London - 3

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  85. Portrait: Leo Szilard, London - 2

    • Collection: Leo Szilard Papers
    • Name: Lotte Meitner-Graf; Szilard, Leo -- Portraits
    • Date: 1958
    • Format: image
  86. Portrait: Leo Szilard, Denver, Colorado - 3

    • Collection: Leo Szilard Papers
    • Name: Kaspar, John; Szilard, Leo -- Portraits
    • Date: Early 1950s
    • Format: image
  87. Portrait: Leo Szilard, New York - 2

    • Collection: Leo Szilard Papers
    • Name: Anderson, Erica; Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  88. Portrait: Leo Szilard, New York - 1

    • Collection: Leo Szilard Papers
    • Name: Anderson, Erica; Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  89. Portrait: Leo Szilard, profile - 3

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  90. Portrait: Leo Szilard, profile - 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- Portraits
    • Date: between 1950 and 1964
    • Format: image
  91. Portrait: Leo Szilard with dog

    • Collection: Leo Szilard Papers
    • Name: Bubly, Ester; Szilard, Leo-- Portraits
    • Date: between 1950 and 1964
    • Format: image
  92. Scrapbook of clippings #4

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  93. Atomic bomb development

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  94. Arms Control

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  95. Scrapbook of clippings #3

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  96. Angels Project

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  97. Scrapbook of clippings #2

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  98. Amino Acid Charts

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  99. Aging

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  100. Scrapbook of clippings #1

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text