ACS projects and research often include detailed analysis and study of an author's life. Below are a list of some of the most frequently used and comprehensive biographical encyclopedias.

ACS Biographies

Oxford Dictionary of National Biography (Oxford University Press)
Presents authoritative biographies of influential people who lived in Britain. Covers only deceased subjects. Includes portraits, if available, and bibliographies with citations to works by and about featured individuals.

Literature Resource Center (Gale)
Provides full text access to critical essays, work and topic overviews, texts from literary magazines, biographies, and more. Covers a wide range of authors including novelists, poets, essayists, and journalists.

American National Biography Online (Oxford University Press)
Presents authoritative biographies of influential people who lived in what is now the United States. Covers only deceased subjects. Includes portraits, if available, and bibliographies with citations to works by and about featured individuals.

Encyclopedia of world biography