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Loureiro (Pedro) Papers
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Collection Details
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  • Organization
  • Scope and Contents
  • Biographical
  • Conditions Governing Access
  • Conditions Governing Use
  • Preferred Citation
  • Immediate Source of Acquisition

  • Language of Material: English
    Contributing Institution: USC Libraries East Asian Library
    Title: Pedro Loureiro papers
    creator: Loureiro, Pedro
    Identifier/Call Number: 3309
    Physical Description: 12.5 Linear Feet 13 boxes
    Date (inclusive): 1910-2016
    Date (bulk): 1930-1945
    Abstract: Pedro Loureiro is a Navy historian, curator, archivist, and USC alum who has concentrated much of his research on pre-War Japanese espionage and relations with the United States. This collection comprises primarily reports, memos, and correspondence relating to the United States Navy, Army and Marine Corps stationed in China and Japan during the late 1920s, 1930s, and 1940s, acquired and collected by Loureiro during his academic research and career as a historian.


    The Pedro Loureiro papers have been organized into the following series: 1. Naval Intelligence; 2. Naval Attaché reports; 3. United States Marine Corps (USMC); 4. Asiatic Fleet; 5. Federal Bureau of Investigation (FBI); 6. United States 10th Army; 7. China; 8. Oral histories; 9. Articles, clippings, and research materials.
    Materials were found to be primarily in chronological order, except for oral histories, which were largely alphabetical. These arrangements have been maintained.

    Scope and Contents

    The Pedro Loureiro papers (1910-2016, bulk 1930-1945) consist of reports, memos, and correspondence relating to the United States Navy, Army, and Marine Corps stationed in China and Japan during the late 1920s, 1930s, and 1940s, and documents the political, economic, military, and social conditions in East Asia, as well as its relations with the United States during these periods. The majority of the material is comprised of items specific to China and Japan during the 1930s and 1940s, including the United States Asiatic Fleet and The United States Marine Corps, particularly the 4th Regiment, and Naval Attaché and intelligence reports.
    The remainder of the collection consists of declassified files from the Federal Bureau of Investigation, oral histories, articles and clippings, and materials relating to the United States 10th Army, as well as to China in the 1930s.


    Pedro A. Loureiro is a Navy historian, curator, archivist, and USC alum who has concentrated much of his research on pre-war Japanese espionage and relations with the United States. As a graduate student majoring in Asian and Military History at San Diego State University in the 1980s, Loureiro's thesis centered on U.S. Counter-Intelligence against Japanese subversion and espionage in Southern California from 1938 to 1944.
    From 1988 to 1995, Loureiro was a student at USC, where he received an M.A. and a Ph.D. His studies focused on Military History, Intelligence studies, Japanese-American History, Modern China and Modern Japan, Records Management, Oral/Video History, and Grant Writing.
    During the course of his academic career, Loureiro sought materials from the United States Office of Naval Intelligence. Many of the items he received access to make up this voluminous collection, as well as additional declassified documents obtained from other government agencies, such as the National Security Agency (NSA) -- which declassified 1.3 million pages of cryptologic documents in 1996, making them available to the public -- and the U.S. Department of Justice.
    Loureiro has written many journal articles on East Asian and American relations, including "Japanese Espionage and American Countermeasures in Pre-Pearl Harbor California", which was published in the Journal of American-East Asian Relations in 1994.
    He was the curator of the Pacific Basin Institute at Pomona College from 1998 to 2009, an archivist at the Defense Imagery Management Operations Center from 2009 to 2016, and currently works as a historian for the U.S. Department of the Navy.
    Loureiro will soon be featured on the Smithsonian Channel regarding his collection at USC as well as his academic career as a historian, scholar, and curator.

    Conditions Governing Access

    COLLECTION STORED OFF-SITE. Advance notice required for access of physical materials. All materials within the collection have also been digitized, except for the oral histories and articles, clippings, and research materials series. Access of the digital items is available through the Pedro Loureiro Collection via USC's Digital Library. http://digitallibrary.usc.edu/cdm/landingpage/collection/p15799coll12

    Conditions Governing Use

    All requests for permission to publish or quote from manuscripts must be submitted in writing to the Curator of the East Asian Library. Permission for publication is given on behalf of the East Asian Library as the owner of the physical items and is not intended to include or imply permission of the copyright holder, which must also be obtained.

    Preferred Citation

    [Box/Folder# or Item name]. Pedro Loureiro papers, Collection no. 3309, East Asian Library, USC Libraries, University of Southern California.

    Immediate Source of Acquisition

    Gift of Pedro Loureiro.

    Subjects and Indexing Terms

    Espionage, Japanese -- United States -- Archival resources
    Military attachés -- China -- Beijing -- Archival resources
    Military attachés -- Japan -- Tokyo -- Archival resources
    Propaganda, Japanese -- United States -- Archival resources
    World War, 1939-1945 -- Campaigns -- Japan -- Okinawa Island -- Archival resources
    World War, 1939-1945 -- Cryptography -- Archival resources
    Annual reports
    Oral histories (document genres)
    Research (documents)
    Loureiro, Pedro -- Archives
    Hoover, J. Edgar (John Edgar), 1895-1972 -- Archives
    Roosevelt, Eleanor, 1884-1962 -- Archives
    Yarnell, Harry E. (Harry Ervin), 1875-1959 -- Archives
    United States. Federal Bureau of Investigation -- Archives
    United States. Marine Corps. Marine Regiment, 4th -- Archives
    United States. Navy. Asiatic Fleet -- Archives