"Over its long existence, the major changes are the doubling of the number of articles and book chapters and the addition of more relevant links on other sites. The site provides access to approximately 450 original documents and includes a topic bibliography to group related documents. The site covers classic documents in a broad range of disciplines, among them biology, philosophy, education, ethics, child development, sociology, and history in addition to psychology. The Google search engine, added in 2002, permits searching by author or topic. As course management software is ubiquitous, sites like this offer high value. Links to relevant content in readable, copyright free, online plain text are convenient for students, faculty, researchers, and the librarians who assist them." Choice, September 2009.