Books: co co education (sorted alphabetically)
- Colleges of Oxford: Their History and Traditions
- College Teaching Paul Klapper
- College, the Market, and the Court Caroline Wells Healey Dall
- Colons du Rivage, ou Industrie et Probité (French) J. Jacques Porchat
- Colored Branches of the Louisville Free Public Library Louisville Free Public Library
- Comenius and the Beginnings of Educational Reform W. S. Monroe
- Comfort Found in Good Old Books George Hamlin Fitch
- Comic Adventures of Old Mother Hubbard, and Her Dog Sarah Catherine Martin
- Comic English Grammar: A New and Facetious Introduction to the English Tongue Percival Leigh
- Comic English Grammar: A New And Facetious Introduction To The English Tongue Percival Leigh
- Comic Latin Grammar: A new and facetious introduction to the Latin tongue Percival Leigh
- Commercial Geography Jacques W. Redway
- Common Minerals and Rocks William O. Crosby
- 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 Classified Price List of School & College Textbooks. January 1915 American Book Company
- Complete Essays of Charles Dudley Warner Charles Dudley Warner
- Complete Grammar of Esperanto (Esperanto) Ivy Kellerman Reed
- Complete Poems of Francis Ledwidge Francis Ledwidge
- Complete Project Gutenberg Collection of Memoirs of Napoleon Various
- Complete Writings of Charles Dudley Warner — Volume 4 Charles Dudley Warner
- Composition Arthur W. Dow
- Composition-Rhetoric Stratton D. Brooks and Marietta Hubbard