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A great deal of highly specialized scholarship is never formally published and appears only as a thesis or dissertation. While recent U.S. and Canadian dissertations and theses are easy to locate -- thanks to centralized control at UMI/Proquest -- older dissertations, master's theses, and foreign dissertations can be difficult to find. Even when you can identify a dissertation that you want to read, it is not always possible to obtain a copy. Keeping that in mind, here are some tools that will help you identify and locate copies of theses and dissertations from U.S. and non-U.S. colleges and universities.

Princeton dissertations

The University Archives holds two copies of most Princeton dissertations, one in Mudd Library and one in Annex A. For dissertations written from 1989 to the present, search the Library's Main Catalog for "Princeton University. Dept. of History" as author; for earlier, try a keyword search for "history and thesis and princeton." A card file and a local database at Mudd may help in locating theses that are obscure or missing in the Main Catalog. For more information, see Princeton University Doctoral Dissertations.

U.S. and Canadian dissertations

For many years, UMI/Proquest has microfilmed U.S. and Canadian dissertations and sold microfilm and print copies to libraries and scholars. Since 1997, they have also made digital versions available online to institutions that subscribe to Proquest Digital Dissertations (which used to be called Dissertation Abstracts International). The DAI database extends back to 1861 and represents the work of authors from over 1,000 North American graduate schools and European universities. Some 60,000 new dissertations and 12,000 new theses are added to the database each year. Those published from 1980 forward also include 350-word abstracts, written by the author. Citations for master's theses from 1988 forward include 150-word abstracts.

DAI can be searched by topic, by school & department, or by adviser (starting with 1989). Use the Advanced Search interface, and be inventive. The subject indexing is extremely general, and the keywords are drawn from the title and abstract, or are those provided by the author, so they can be very inconsistent. To see which schools are included for a particular country, use the Advanced Search, School Index, and search by the name of the country, e.g. "france."

If you request a US dissertation through Interlibrary Loan, generally they will purchase it from UMI for the library. (Dissertations that are not held by UMI, e.g. Harvard dissertations, are more difficult to obtain.) Canadian dissertations can be obtained through ILL from the National Library of Canada on microfiche. Canadian theses are indexed in Theses Canada from 1965, with full text from 1998.

Dissertations written elsewhere

The best guide to the many printed catalogs and lists of dissertations is Reynolds' Guide to theses. It is arranged by country of origin and by topic.
Reynolds, Michael M. Guide to theses and dissertations: an international bibliography of bibliographies. Rev. and enl. ed. Phoenix, AZ: Oryx Press, 1985.
General and Humanities Ref. (DR): Ready Reference Z5053.A1 R49 1985

Note that you can often find printed bibliographies by searching the Main Catalog for
Dissertations, Academic [Country]

CRL's Foreign Doctoral Dissertations Database

Coverage of non-U.S. dissertations in DAI is sketchy, and it can be difficult to identify and obtain copies of foreign dissertations. However, the Center for Research Libraries actively collects foreign dissertations and provides them to member institutions through interlibrary loan. Unfortunately, their collection is not completely indexed in the Foreign Doctoral Dissertations Database, so if you need a foreign dissertation that isn't listed there, it's well worth making an interlibrary loan request for it anyway. Please allow extra time -- if the dissertation you need is already at CRL, it will come quickly, but if they need to purchase it, it may take six months to a year.

British dissertations

The Index to theses with abstracts accepted for higher degrees by the universities of Great Britain and Ireland and the Council for National Academic Awards replaces a printed index and covers British theses and dissertations from 1716 through the present; the database includes Irish theses as well. Most British doctoral dissertations are available through the British Library's British Thesis Service. In general, Interlibrary Loan staff can easily obtain British dissertations from the BL, generally in microform. You may also be required to complete a "Thesis Declaration Form" before the BL ships the thesis to Princeton. See British Thesis Service for more information.

German dissertations

The printed Deutsche Nationalbibliographie, which listed dissertations in Reihe C Dissertationen und Habilitationscchriften and Reihe H Hochschulschriften, must now be supplemented with online searching in the Deutsche Bibliothek's online catalog. (The older volumes of the Deutsche Nationalbibliographie are now housed in Annex A, and the last 5 years are in the reference room in Firestone at Z5055.G29 D478.) For digital dissertations in German, see Dissertationen Online. Our Interlibrary Loan staff can obtain copies of many German dissertations through CRL, but the process frequently takes several months and can take longer, so plan accordingly.

French dissertations

Recent French dissertations are listed in Système universitaire de documentation [SUDOC], which is provided by L'Agence bibliographique de l'enseignement supérieur. A project to provide digital theses is underway. To find theses only, use the "Recherche avancée" form and limit to "theses." Older French dissertations are listed in:
Catalogue des thèses et écrits académiques.
Firestone Library (F) Z5055.F79 C37
Library has: 1884/85-1939, 1941-1959, 1934-1959 bound as part of Bibliographie de la France, 1937-1960 (0406.358)
which was continued by:
Catalogue des thèses de doctorat soutenues devant les universités françaises.
Z5055.F79 C37 Location Has: 1965, 1967-1978
Z5055.F69 I59 Location Has: 1981-1991

Italian dissertations

Try Tesionline.

Spanish dissertations

Dissertations completed since 1976 are indexed in Bases de datos de tesis doctorales

Tips on obtaining copies of dissertations

  • If the dissertation you need is in DAI and was completed in 1997 or later, you can obtain a PDF of the full text. From the citation, click on "Free Download" and then follow the instructions.
  • To borrow a dissertation through Interlibrary Loan, use the Thesis request form online. Please allow plenty of time -- some dissertations are easy to obtain and arrive quickly, but others may take months.
  • To purchase a copy of a dissertation for yourself, simply use the order form on UMI's web site.
  • To request that Princeton purchase a copy of a dissertation for the library, contact the History Librarian at the address below.

Dissertations in progress

The American Historical Association maintains a list of dissertations in progress at http://www.historians.org/pubs/dissertations/. The list is provided by history departments annually, so it may not be complete, but it's a useful starting point.