Alfred Powell Morgan
Roberts Beaumont
E. C. Gardner
Simon Lake
La Verne W. Spring
John Morison Copeland
K. J. Adcock
Frederick Law Olmsted Jr.
James Silver, W. E. Crouch and M. C. Betts
T. Frederick Hardwich
W. D. Keller
E. S. Keene
Charles B. Hayward
S. B. Reed
Joseph Turney Wood
Ralph P. Dillon et al.
B. C. Batcheller
C. F. Cross & E. J. Bevan
William J. Claxton
Robert DeCourcy Ward
Henry A. Gardner
American Railway Signal Association
Joseph Nasmith
Farnham Bishop
