Page by Page Books - Hundreds of classical books.
Parliament Rolls of Medieval England - The rolls of parliament were the official records of the meetings of the English parliament from the reign of Edward I (1272 - 1307) until the reign of Henry VII (1485 - 1509).
Penn/Cambridge Genizah Fragment Project - A collaborative effort between the Penn Libraries and the Taylor-Schechter Genizah Research Unit of the Cambridge University Library to display selected fragments from their Cairo Genizah holdings.
PhilPapers - Philosophical Research Online – An index to more than 1.75 million articles in the fields of philosophy, with links to mostly full-text journal articles, books, personal web sites, and open access archives.
Project Ben-Yehuda - Classics of Hebrew literature, poetry, prose, etc.
Project Gutenberg - There are three portions of the Project Gutenberg Library. They may be described as: light literature such as Alice in Wonderland, Through the Looking-Glass, Peter Pan, Aesop's Fables, etc; heavy literature, such as Shakespeare, Moby Dick, Paradise Lost, etc; reference works such as Roget's Thesaurus, almanacs, etc.
Project Muse - Muse provides access to full-text content of over 400 journals from many of the world's leading university presses and scholarly societies.
PROLA - Physical Review Online Archive
ProQuest Education Journals - Provides full text and abstracts from journals covering all educational levels and a wide range of topics in education.
PsycBooks - A full-text database of scholarly titles published by the American Psychological Association and others. The database includes the APA/Oxford University Press Encyclopedia of Psychology. The books are listed in YULIS, YU Library's online catalog.
PsycCRITIQUES - find full-text reviews of current books and popular films in psychology .
Psychoanalytic Electronic Publishing - A database containing the full text of important psychoanalytic journals from 1871 to 2008 (some with access to current issues) and classic books in the field including Freud's collected works, a glossary and a dictionary.
PsycINFO (1887 - )
Psychotherapy.net - Streaming video demos of psychotherapy and counseling sessions.
PsycTESTS - Provides access to psychological tests, measures, scales, and surveys, as well as descriptive information about the tests' scope, development, implementation, and reliability and validity data (when available).
PubMed Central - An electronic archive of approximately two million full-text journal articles (including book reviews) in the field of biochemistry/medicine, including manuscripts based on NIH-funded research.
PubMed (Medline) - A comprehensive database of citations and abstracts (with links to some full-text) for millions of articles from thousands of journals in biochemistry/medicine and related fields.