- Collins, Ralph S. (Ralph Simpson), 1923-20011
- Computation laboratories1
- Construction workers1
- Convenience stores1
- Convict labor1
- Cooper, Robert Muldrow, 1887-19661
- Corncribs1
- Covered bridges1
- Craig and Gaulden (Firm)1
- Crouch, Sydney James Leonhardt, 1889-19691
- Daniel House (Clemson, S.C.)1
- Daniel, Charles E. (Charles Ezra), 1895-19641
- Davis, Tracy1
- Deans (Education)1
- Decoration and ornament, Architectural1
- Dedication services1
- Dedications1
- Derrick, Butler Carson, Jr., 1936-20141
- Dining room furniture1
- Dinners and dining1