Harry Custer Plummer
Structural Clay Products Institute.
Unknown Author
Cambridge Tile Manufacturing Company
Consell Valencià de Cultura
National Fire Proofing Company
George Collins
Javier García-Gutiérrez Mosteiro
Somčhai Nimlek
Jerry Germer
Bryan J. D. Spain
Nathaniel Lloyd
W. Blair
Donald B. Corner
Federal-American Cement Tile Co
Janet Parks
Avery Library. Department of Drawings & Archives
John Greene
J. G. Cleland