William B. Elmer
Helmut Köster
H. Buckley
Pittsburgh Reflector Company
Robert L. Ash
Wheeler Reflector Co. (Boston, Mass.).
Illuminating Engineering Society of North America. Photometry of Light Sources Subcommittee.
John E Canady
Julio Chaves
ABolite Reflector Co
Roland Winston
Scott W. Richter
Sunlight Reflector Co
Bright Light Reflector Co
Day-Brite Reflector Co
Marbelite Art Products Company