Documents you can find here

• People of the Doctrine & Covenants, article from Church News

• Places where D&C revelations were received, article from Church News

• Story of the Doctrine and Covenants, by Robert J. Woodford

• How the Revelations in the D&C Were Received and Compiled, by Robert J. Woodford

• Preparing Early Revelations for Publication, by Melvin J. Petersen

• Preface to the 1835 edition

• Revelation Guided the Prophet, by Larry C. Porter

• Latter-day Revelation, by Larry C. Porter

• Heroic Rescues, by Gerry Avant

• Beyond the Veil: Two Latter-day Revelations, by Robert L. Millet

• Development of the Doctrine and Covenants; a seminary handout that summarizes the major editions

• Undated, unpublished revelation on the name of God, cited in a discourse by Orson Pratt

• A Written Covenant, a document related to call of missionaries to the Lamanites, in sections 28 & 30.

• Testimony of Addison Everett on the Restoration of the Melchizedek Priesthood

Other resources you can find here

• New! JST vs. KJV, a side-by-side comparison of the text of Joseph Smith Translation and the King James Version of the Bible, prepared by Andy Hobbs
• Blood Atonement and the Origin of Plural Marriage, by Joseph Fielding Smith
• Lectures on Faith, which were included in early editions of the Doctrine and Covenants.

Links to Other D&C-related Resources

• Book of Commandments, the predecessor to the Doctrine & Covenants

• A Study of the Nature of and the Significance of the Changes in the Revelations as Found in a Comparison of the Book of Commandments and Subsequent Editions of the Doctrine and Covenants, a masters thesis by Melvin J. Petersen, written in 1955, and prepared for HTML by Mike Parker.

Links to Church History Resources

• Documentary History of the Church (Text)—files are fairly large, about 1Mbyte each. A new annotated history, with notes giving or referring to modern research is found at the same location (work is still in progress).

• Mormon History Resource Page, by Dave Crockett

Scriptures

• Bible: King James Version

• Joseph Smith, Jun.'s INSPIRED VERSION of the BIBLE, or The Inspired Version of the Bible

• Standard Works: at Deseret Book, at Bookcraft/Infobases, or at Scriptures.Org

• 1999 Gospel Doctrine Lesson New Testament Reading Assignments. Also available are Selected quotes from GospeLink for each lesson.

Links to Other Doctrinal Resources

• Teachings of the Prophet Joseph Smith (Text), selected and arranged by Joseph Fielding Smith.

• The Book of Abraham Project