Consolidated Code of Operating Rules of 1967 for the Great Northern Railway, Northern Pacific Railway, Spokane, Portland, and Seattle Railway and other railroads.

Great Northern Dispatchers' Manual Based on 1945 Consolidated Code of Operating Rules. A copy of the 1945 Consolidated Code of Operating Rules is essential to understanding the contents of this manual.

Great Northern Dispatcher's Manual Based on 1959 Consolidated Code of Operating Rules. A copy of the 1959 Consolidated Code of Operating Rules is essential to understanding the contents of this manual.

Great Northern Dispatcher's Manual Based on 1967 Consolidated Code of Operating Rules. A copy of the 1967 Consolidated Code of Operating Rules is essential to understanding the contents of this manual.