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Showing results for 1,401 - 1,420 of 1,460 1900s

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  1. U.S. War Department

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  2. U.S. Weather Bureau Station, top of Mt. Tamalpais, Marin Co., Cal.

    • Collection: Baja California and the West Postcard Collection
    • Name: Paul C. Koeber Co.
    • Date: between 1900 and 1923
    • Topic: Meteorological stations
    • Format: image
  3. U.S.S.R

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  4. Uber die Entropieverminderung in einem thermodynamischen System bei Eingriffen intelligenter Wesen

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  5. Unidentified arch dam

    • Collection: Ed Fletcher Papers
    • Date: between 1890 and 1940
    • Topic: Dams
    • Format: image
  6. Unidentified building

    • Collection: Ed Fletcher Papers
    • Date: circa 1910
    • Format: image
  7. Unidentified correspondents

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo -- correspondence
    • Date: between 1898 and 1998
    • Format: text
  8. Unidentified farm

    • Collection: Ed Fletcher Papers
    • Date: circa 1910
    • Topic: farms
    • Format: image
  9. Unidentified people at Stratford Inn grounds

    • Collection: Ed Fletcher Papers
    • Name: Stratford Inn (Calif.)
    • Date: between 1906 and 1925
    • Topic: Hotels
    • Format: image
  10. Unidentified people at Warner Hot Springs

    • Collection: Ed Fletcher Papers
    • Name: Warner's Ranch
    • Date: between 1890 and 1910
    • Topic: Hot springs
    • Format: image
  11. Unidentified woman at Warner Springs

    • Collection: Ed Fletcher Papers
    • Date: between 1890 and 1915
    • Topic: Hot springs
    • Format: image
  12. Union Depot, Ogden, Utah

    • Collection: Baja California and the West Postcard Collection
    • Name: Gray News Co.
    • Date: between 1906 and 1922
    • Topic: Railroad stations
    • Format: image
  13. Union Trust Building, Los Angeles, Cal.

    • Collection: Baja California and the West Postcard Collection
    • Name: Newman Post Card Co.
    • Date: circa 1914
    • Topic: Architecture
    • Format: image
  14. University documents: General materials and early photographs

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  15. University of Chicago - Board of Trustees

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  16. University of Colorado cover

    • Collection: Leo Szilard Papers
    • Name: Szilard, Leo
    • Date: between 1898 and 1998
    • Format: text
  17. Unpaved road leading to Stratford Inn

    • Collection: Ed Fletcher Papers
    • Name: Stratford Inn (Calif.)
    • Date: between 1906 and 1925
    • Topic: Hotels
    • Format: image
  18. Untitled Writings by Leo Szilard - 3

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  19. Uranium project "General remarks - Rough drafts" 

    • Collection: Leo Szilard Papers
    • Date: between 1898 and 1998
    • Format: text
  20. USS Chicago on San Diego Bay

    • Collection: San Diego History Center Photographs
    • Date: ca. 1908
    • Topic: Bays; United States Navy; Warships
    • Format: image