Books: co re re re re co education (sorted alphabetically)
- Commonwealth of Oceana James Harrington
- Companion to the Bible E. P. Barrows
- Compilation on Bahá'í Education Universal House of Justice
- Complete Classified List of Books, Pamphlets, Etc., Published Exclusively by The Open Court Publishing Co. Open Court Publishing Company
- Complete Essays of Charles Dudley Warner Charles Dudley Warner
- Complete Grammar of Esperanto (Esperanto) Ivy Kellerman Reed
- Complete Project Gutenberg Collection of Memoirs of Napoleon Various
- Complete Writings of Charles Dudley Warner — Volume 4 Charles Dudley Warner
- Condensed guide for the Stanford revision of the Binet-Simon intelligence tests Lewis M. Terman
- Confessions of Jean Jacques Rousseau — Complete Jean-Jacques Rousseau
- Conflict David Graham Phillips
- Coniston — Complete Winston Churchill
- Consecrated Womanhood Frederic Rowland Marvin
- Considerations on Religion and Public Education Hannah More
- Contes et historiettes à l'usage des jeunes enfants (French) Zulma Carraud
- Contes Français (French)
- Copyright Law of the United States of America United States and Library of Congress. Copyright Office
- Corazón : (diario de un niño) (Spanish) Edmondo De Amicis
- Correct Account of the Horrible Occurrence Which Took Place at a Public-House in St. James's Market Anonymous
- Cotton Kingdom, volume 1 (of 2) : A traveller's observations on cotton and slavery in the American Slave States Frederick Law Olmsted
- Counter-currents Agnes Repplier
- Country Walks of a Naturalist with His Children W. Houghton
- Court Life in China: The Capital, Its Officials and People Isaac Taylor Headland
- Crayon and Character: Truth Made Clear Through Eye and Ear B. J. Griswold
- Critiques and Addresses Thomas Henry Huxley