Union catalog of digital resources. Contains digital resources from open archive collections with links to the full text. Provided by OCLC.

draws on the acclaimed social issues series published by Greenhaven Press, as well as core reference content from other Gale and Macmillan Reference USA sources to provide pro and con arguments for a broad range of current social issues.

Provides authoritative definitions of over 500,000 words, traces the usage of words from their first recorded occurrence to the modern period through 2.5 million quotations, and offers the best in etymological analysis and listings of variant spellings.