Of particular use to alumni and the general public: The following three open access dissertation and theses databases are available. Some titles in these databases are citation only, but many provide free access with links to the full text of the dissertation or thesis cited.
Many periodical databases in academic disciplines index dissertations in addition to articles and books: MLA Bibliography, PsycINFO, and EconLit are three well-known examples. In general, one would not expect to find dissertations not already cited in ProQuest Dissertations and Theses Global in these databases. However, it can be a way to locate dissertations written in a particular discipline rather than searching using specific subject terms in PQD&TG.