Canada. Dept. of Railways and Canals.
Rolt Hammond
Jacques Mathivat
Phillips, Philip engineer.
W. Westhofen
Unknown Author
Howard Curry
R. M. Wilcox
Fowler, Charles Evan
D. B. Steinman
Middleton, William D.
C. F. Findley
Kurt Beyer
Wilhelm Westhofen
Anthony G. White
Nebraska. Dept. of Roads. Bridge Design Division.
Michel L'Hébreux