- The Comedy of Errors: The Works of William Shakespeare [Cambridge Edition] [9 vols.]Author: William Shakespeare, William George Clark, Glover, John, librarian of Trinity College, Cambridge [Editor]Released on Project Gutenberg: December 30, 2007
- The Coming Conquest of EnglandAuthor: August Niemann, John Henry FreeseReleased on Project Gutenberg: May 14, 2006
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- The Commercial Products of the Vegetable Kingdom: Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, andAuthor: P. L. (Peter Lund) SimmondsReleased on Project Gutenberg: February 27, 2005
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- The Common Edition: New TestamentAuthor: T. E. (Timothy E.) ClontzReleased on Project Gutenberg: February 1, 2002
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- The Common ManAuthor: Mack Reynolds, George SchellingReleased on Project Gutenberg: October 25, 2007
- The Common People of Ancient Rome: Studies of Roman Life and LiteratureAuthor: Frank Frost AbbottReleased on Project Gutenberg: August 19, 2004
- The Common Sense of Socialism: A Series of Letters Addressed to Jonathan Edwards, of PittsburgAuthor: John SpargoReleased on Project Gutenberg: January 17, 2008
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- The Communist ManifestoAuthor: Karl Marx, Friedrich EngelsReleased on Project Gutenberg: January 25, 2005
- The Communist Threat in the Taiwan AreaAuthor: Dwight D. (Dwight David) Eisenhower, John Foster DullesReleased on Project Gutenberg: June 28, 2005
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- The Compleat AnglerAuthor: Izaak WaltonReleased on Project Gutenberg: October 1, 1996
- The Compleat Cook: Expertly Prescribing the Most Ready Wayes, Whether Italian,: Spanish or French, for Dressing of Flesh and Fish, Ordering: Of Sauces or Making of PastryAuthor: W. M.Released on Project Gutenberg: December 1, 2003
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- The Complete Bachelor: Manners for MenAuthor: Germain, WalterReleased on Project Gutenberg: July 2, 2008
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- The Complete Essays of Charles Dudley WarnerAuthor: Charles Dudley WarnerReleased on Project Gutenberg: October 11, 2004
- The Complete Essays of John GalsworthyAuthor: John GalsworthyReleased on Project Gutenberg: September 25, 2004
- The Complete HomeAuthor: Clara E. (Clara Elizabeth) Laughlin, Rippey, Sarah Cory [Contributor], Williamson, Oliver R. [Contributor]Released on Project Gutenberg: September 4, 2005
- The Complete Plays of Gilbert and SullivanAuthor: Arthur Sullivan, W. S. (William Schwenck) GilbertReleased on Project Gutenberg: February 1, 1997
- The Complete Poems of Paul Laurence DunbarAuthor: Paul Laurence Dunbar, William Dean HowellsReleased on Project Gutenberg: May 7, 2006
- The Complete Poems of Sir Thomas Moore: Collected by Himself with Explanatory NotesAuthor: Thomas Moore, William Michael RossettiReleased on Project Gutenberg: May 1, 2005
- The Complete Poetical Works of Edgar Allan Poe: Including Essays on PoetryAuthor: Edgar Allan Poe, John Henry IngramReleased on Project Gutenberg: November 1, 2003
- The Complete Poetical Works of Henry Wadsworth LongfellowAuthor: Henry Wadsworth LongfellowReleased on Project Gutenberg: June 1, 1998
- The Complete Poetical Works of James Russell LowellAuthor: James Russell LowellReleased on Project Gutenberg: August 28, 2004
- The Complete Poetical Works of Oliver GoldsmithAuthor: Goldsmith, OliverReleased on Project Gutenberg: November 1, 2002
- The Complete Poetical Works of Percy Bysshe Shelley — CompleteAuthor: Percy Bysshe Shelley, Hutchinson, Thomas [Editor]Released on Project Gutenberg: December 1, 2003
- The Complete Poetical Works of Percy Bysshe Shelley — Volume 1Author: Percy Bysshe Shelley, Hutchinson, Thomas [Editor]Released on Project Gutenberg: December 1, 2003
- The Complete Poetical Works of Percy Bysshe Shelley — Volume 2Author: Percy Bysshe Shelley, Hutchinson, Thomas [Editor]Released on Project Gutenberg: December 1, 2003
- The Complete Poetical Works of Percy Bysshe Shelley — Volume 3Author: Percy Bysshe Shelley, Hutchinson, Thomas [Editor]Released on Project Gutenberg: December 1, 2003
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- The Complete Works of Artemus Ward (HTML edition)Author: Artemus WardReleased on Project Gutenberg: November 1, 2004
- The Complete Works of Artemus Ward — Part 1: Essays, Sketches, and LettersAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 2: WarAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 3: Stories and RomancesAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 4: To California and ReturnAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 5: The London Punch LettersAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 6: Artemus Ward's PanoramaAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
- The Complete Works of Artemus Ward — Part 7: MiscellaneousAuthor: Artemus WardReleased on Project Gutenberg: June 1, 2002
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- The Complete Works of Brann, the Iconoclast — Volume 10Author: William Cowper BrannReleased on Project Gutenberg: June 1, 1996
- The Complete Works of Brann, the Iconoclast — Volume 12Author: William Cowper BrannReleased on Project Gutenberg: June 1, 1996
- The Complete Works of James Whitcomb Riley — Volume 1Author: James Whitcomb RileyReleased on Project Gutenberg: October 1, 1996
- The Complete Works of James Whitcomb Riley — Volume 10Author: James Whitcomb RileyReleased on Project Gutenberg: October 1, 1996