Names
- National Terra Cotta Society1
- Neville & Bagge1
- New Jersey Terra Cotta Co1
- New York Architectural Terra Cotta Company1
- Nirdlinger, M1
- Northwestern Terra Cotta Company1
- O.W. Ketcham Terra Cotta Works1
- Pelham, George F (George Frederick), 1866-19371
- Pilcher, Lewis F1
- Post, George Browne, 1837-19131
- Potter, Wilson1
- Proudfoot, Bird and Rawson1
- Raritan Clay Co1
- Renaissance Apartments (Brooklyn, New York, N.Y.)1
- Renwick, Aspinwall & Tucker1
- Richards, McCarty & Bulford (Columbus, Ohio)1
- Roth, Emery, 1871-19481
- Rouse & Goldstone1
- Rowland, John T., 1872?-19451
- Rutan and Russell1