Dissertations and Theses Global (ProQuest) This link opens in a new windowWith over 2.7 million entries, Proquest Dissertations is the authoritative resource for searching doctoral dissertations and master's theses from around the world, from 1861 to the present. Full text PDFs are usually available to download for theses published since 1997. Beginning in 2008, Northeastern University Masters and PhD students submit their completed dissertations to this "database of record" for graduate research.