Post-1930

Citadel
Algirdas Jonas Budrys

City at World's End
Edmond Hamilton

The City of the Living Dead
Fletcher Pratt

Civilization and Beyond
Learning From History
Scott Nearing

The Civilization of Illiteracy
Mihai Nadin

Clash of the Sissies
Graham Parke

Clásicos Castellanos: Libro de Buen Amor
Juan Ruiz

Class of '29
A Play in Three Acts
Milo M. Hastings

The Clean and Wholesome Land
Ralph Sholto

Clean Break
Roger D. Aycock

Clean Break
Lionel White

Clear Crystals
Clara M. Beede

Clear Voices
A Personal Selection of Twenty-five Poems translated from the Russian.
Various

The Cleric's Secret
Warwick Deeping

Cliges: A Romance
Chrétien de Troyes

The Clock Strikes Thirteen
Mildred A. Wirt

Clue of the Silken Ladder
Mildred A. Wirt

The Clue of the Silver Key
Edgar Wallace

The Cluetrain Manifesto
Rick Levine, Christopher Locke, Doc Searls, David Weinberger

Code Three
Rick Raphael