- Clark, Carol A1
- Classical America (Society)1
- Columbia University. Graduate School of Architecture, Planning, and Preservation. Historic Preservation Program1
- Columbia University. Preservation Alumni1
- Cserna, George1
- Davis, Andrew Jackson, 1826-19101
- De Long, David Gilson, 1939-1
- Delacorte Theater (New York, N.Y.)1
- Eggers & Higgins1
- Erder, Cevet1
- Feilden, Bernard1
- Fine Arts Federation of New York1
- Fitch, James Marston1
- Foerster, Bernd1
- Friends of Cast Iron Architecture1
- Galbraith, Robert1
- Gayle, Margot1
- Ginzburg, Nicola1
- Grey Art Gallery & Study Center1
- Gropius, Walter, 1883-19691