Shackel, B.
M.O. Obande
M. O. Obande
Spencer B. Newberry
Robert Benjamin Ham
J. P Lévy
Cement and Concrete Association
Portland Cement Association.
J. Ralph Dalzell
National Concrete Masonry Association
A. A. Lilley
Michael Terence Gage
H. H. Rice
Sears, Roebuck and Company
Schuyler Hamilton
T. Y. Lin
B. H. Fisher
Bernhard Wedler
George W. Hoffmann
A. K. Tovey