The correspondents are:
John Cairns, Ed Callaway, Maura Pendergast (Cambridge Associates Inc), Thomas Callos, Cambridge University Development Office, Professor Alan Cowey, Aubrey Carezani, Sara Abdulla (re Mapping the Mind by Rita Carter), Rita Carter, Dr. Kenneth L. Casey, Thomas R. Cech, Professor David J. Chalmers, Professor Raymond Chang, Glenn T. Seaborg (Chemical Heritage Foundation), Wendy Chen, Dr. George Christos, Churchill College, Dr. Patricia Churchland, Dr. Barry Karr (CSICOP), Laurie R. Harer (Coastline Community College), S. D. Coetzee, Dr. Bill Comer, Parker Rouse Conrad, Ray Cornish, the Cosmos Letter (an initiative to establish a new scientific method established by the Commemorative Foundation for the International Garden and Greenery Exposition, Osaka, Japan), Professor Rodney Cotterill, Virginia Hippisley-Cox [for additional correspondence filed under 'Hippisley' see file PP/CRI/J/1/6/8], Don Couillard, James P. Cramer (Greenway Group), and Shane Crotty.
Letters detailing sensitive personal circumstances have been extracted to file PP/CRI/J/1/6/25.