The Division Engineer of the Portland Division, Southern Pacific Company, ordered the Signal Supervisor of the same division, to devise some improvements in the signal system in order to make train movements between Oregon City, Oregon and Woodburn, Oregon more rapid and relieve congestion over this part of the single-track steam line. The following system has been worked out by the Signal Department.
Missouri School of Mines and Metallurgy
15 Dec 1921
Oregon City and Woodburn, Oregon
© 1921 Missouri School of Mines and Metallurgy, All rights reserved.
Chomeau, Henri, "A Report On "Relieving Traffic Congestion on the Southern Pacific between Oregon City, Oregon and Woodburn, Oregon."" (1921). Missouri School of Mines and Metallurgy Reports. 2.