Other
Ray Stedman: Expository Studies in First Corinthians
An in-depth study of the Apostle Paul's first epistle to the Corinthians.
Other
Boston Globe: Beyond Serenity: Life of Reinhold Niebuhr
A short biographical sketch of one of the leading American theologians of the 20th century focusing on the use of his prayer known as "the Serenity Prayer".
Stanford University
Soren Kierkegaard, Stanford Encyclopedia of Philosophy
A thorough and complete biography. Includes sections on Kierkegaard's life, rhetoric, ethics, politics, and religion, just to name a few. Also contains a time-line and bibliography of works.