E.I. du Pont de Nemours & Company

American Society of Civil Engineers

Armstrong Cork Company

Bob Webster

Charles A. Bramble

Edward C. Kendall

Ernest Spon

Thomas W. Corbin

A. A. Stewart

Aaron A. Warford

Alex Schwalbach

Arnold Wolfensberger

C. H. Fay

C. Tuells

Carlos De Zafra

Charles Conrad Sleffel

Charles Minor Blackford