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Showing results for 1 - 100 of 344 1960s 1920s 1980s 1940s 1890s

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  1. Compressor at La Dificultad mine, Pachuca, Hidalgo

    • Collection: José Villegas Collection on Mining
    • Name: Compañía Real del Monte y Pachuca
    • Date: between 1895 and 1983
    • Topic: Mining machinery
    • Format: image
  2. Hacienda de Beneficio Loreto, Pachuca, Hidalgo

    • Collection: José Villegas Collection on Mining
    • Name: Compañía Real del Monte y Pachuca
    • Date: between 1895 and 1983
    • Topic: Silver mines and mining
    • Format: image
  3. La Dificultad mine steam engine house chimney, Pachuca, Hidalgo

    • Collection: José Villegas Collection on Mining
    • Name: Compañía Real del Monte y Pachuca
    • Date: between 1895 and 1983
    • Topic: Silver mines and mining
    • Format: image
  4. La Dificultad mine steam engine house, Pachuca, Hidalgo

    • Collection: José Villegas Collection on Mining
    • Name: Compañía Real del Monte y Pachuca
    • Date: between 1895 and 1983
    • Topic: Silver mines and mining
    • Format: image
  5. Casa de la máquina de vapor y chimenea Real del Monte

    • Collection: José Villegas Collection on Mining
    • Name: Compañía Real del Monte y Pachuca
    • Date: between 1895 and 1983
    • Topic: Silver mines and mining
    • Format: image
  6. José Villegas Collection on Mining

    • Documents and photographs relating to silver mining operations in Mexico, principally Real del Monte and Pachuca during the periods of British (1824-1849) and Mexican (1849-1906) capitalization and management.
    • Creation Date: circa 1825-1983
  7. Leo Szilard Papers

    • A selection of documents, photos, and audio-visual materials of the nuclear physicist and inventor Leo Szilard.
    • Access: Some items restricted
    • Creation Date: 1898-1998
  8. San Diego History Center Photographs

    • Over 3,000 images from the San Diego History Center that document the rise and decline of the California fishing industry. These historical photographs from the 1870s to the 1980s represent the work of many important San Diego photographers.
    • Creation Date: 1880-1980
  9. Scripps Institution of Oceanography Letters, Clippings, Ships' Logs

    • Images of historical documents about Scripps expeditions.
    • Creation Date: 1873-1987
  10. Biology "Immunity II." (Chicago)

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  11. Biology 1 (Chicago). Includes draft of "Science is my racket" and "Chemostat"

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  12. Biology 7

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  13. Notebook 3

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  14. Patents - Liquid/Liquid extractor

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  15. Physics "Uranium"

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  16. Physics (G-22)

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  17. "Reminiscences" Excerpts 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  18. [Biology (G-31)]

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  19. [Biology (K-12)]

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

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  21. Aging (S-48) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  22. American Arbitration Association

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

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

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  25. Antibody letters (V-83) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  26. Atomic Energy Control Conference

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  27. Bethe Chicago (G-29)

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  28. Bibliographic materials 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  29. Biographical publications

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  30. Biographical References for Extension of Leo Szilard Biography 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  31. Biology "DNA" 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  32. Biology (Aging G-27) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  33. Biology (B-1) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  34. Biology (E-11) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  35. Biology (E-52) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  36. Biology (R-26) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  37. Biology 4 (Chicago)

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  38. Biology Algae (E-33) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  39. Bullsperm - Photographs

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

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  41. C- miscellaneous - Correspondence - part 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  42. Canfield, Cass

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  43. Central Nervous System

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  44. Cold Springs Harbor Symposium

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  45. Collected Works of Leo Szilard: Notes - 1

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  46. Collected Works of Leo Szilard: Notes - 2

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  47. Collected Works of Leo Szilard: Notes - 4

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  48. Collected Works of Leo Szilard: Notes - 5

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  49. Congress International de Physique Nucleaire

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  50. Coronary Heart Disease

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  51. Council and the Lobby

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  52. Council to Abolish War - Correspondence of public response

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  53. Council to Abolish War - General materials

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  54. Council, MIT 

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- Oratory
    • Date: between 1898 and 1998
    • Format: text
  55. Counts #2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  56. Curriculum vitae

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  57. Disarmament (V-11) 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  58. Doctor Szilard interviews Doctor Teller 

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- interviews
    • Date: between 1898 and 1998
    • Format: text
  59. Doctor Szilard interviews Doctor Watson 

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- interviews
    • Date: between 1898 and 1998
    • Format: text
  60. E-Miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  61. Early receipts

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  62. Enzymes - graphs and charts

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  63. Equipment and supplies catalogs - 1

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  64. F- miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  65. Family emigration to United States

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  66. Family property in Hungary

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  67. Fertility Control

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  68. Financing of higher education in the professional schools of the U. of Chicago

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  69. Free market economy in a 'constant flow' monetary system - handwritten notes

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  70. Freedom of Information Act - Department of the Army - 1

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  71. Freedom of Information Act - Department of the Army - 2

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  72. Freedom of Information Act - Federal Bureau of Investigation (FBI) - 1

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  73. Freedom of Information Act - Freedom of Information Act 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  74. Freedom of Information Act - Miscellaneous 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  75. G- miscellaneous - Correspondence - part 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  76. G- miscellaneous - Correspondence - part 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  77. G-Miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  78. General Materials - MIT Press, Harvard Press, and Others 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  79. General recommendations concerning research on uranium

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  80. H- miscellaneous - Correspondence - part 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  81. H- miscellaneous - Correspondence - part 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  82. Heat transfer, refractories, metals, high temperature

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  83. How to kill your husband and get away with it

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  84. Hydrogen bombs 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  85. I- miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  86. Institute for Cell Research and Genetics

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  87. Institute for International Order

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  88. International Fertility Association

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  89. Italian Society of Physics

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  90. Japan Council Against Atomic and Hydrogen Bombs

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

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  92. L- miscellaneous - Correspondence - part 2

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  93. L-Miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  94. Long history, second version 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  95. M- miscellaneous - Correspondence - part 1

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  96. M-Miscellaneous - Correspondence

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  97. Man Tommorow: An interview recorded at Dubrovnik with Professor Leo Szilard 

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- interviews
    • Date: between 1898 and 1998
    • Format: text
  98. Meat: The art of the possible

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  99. Memoranda - No date 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  100. Miscellaneous (3 b.s. 17) 

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