1. Anderson, R. E., “Upsurge in Communications and Signalling,” Progressive Railroading, May 1983, pp. 27-34.
2. “Automatic Dispatching to the Colton Cutoff,” Progressive Railroading, January 1981, pp. 75-76.
3. “CN Computerizes Train Control,” Progressive Railroading, March 1983, pp. 53-54.
4. CN Rail's Computerized Traffic Control System (assorted information and exhibits), August 1983.
5. “Coded Track Circuits: Microprocessors Make the Difference,” Railway Age, October 1983, pp. 46-47.