Railroad Archives Online
- CollectionD0046 - Andrew Klamka Collection
- Series003 - Great Northern Railway Company (U.S.)
- Subseries Level 1004 - Library
- Subseries Level 2002 - Periodicals
- 3 more...
- ItemGNSemaphoreVol1No4 - Great Northern Railway Club 'THE SEMAPHORE', April 1924
- ItemGNSemaphoreVol1No5 - Great Northern Railway Club 'THE SEMAPHORE', May 1924
- ItemGNSemaphoreVol1No6 - Great Northern Railway Club 'THE SEMAPHORE', June 1924
- ItemGNSemaphoreVol1No7 - Great Northern Railway Club 'THE SEMAPHORE', July 1924
- ItemGNSemaphoreVol1No8 - Great Northern Railway Club 'THE SEMAPHORE', August 1924
- ItemGNSemaphoreVol1No9 - Great Northern Railway Club 'THE SEMAPHORE', September 1924
- ItemGNSemaphoreVol1No10 - Great Northern Railway Club 'THE SEMAPHORE', October 1924
- ItemGNSemaphoreVol1No11 - Great Northern Railway Club 'THE SEMAPHORE', November 1924
- ItemGNSemaphoreVol1No12 - Great Northern Railway Club 'THE SEMAPHORE', December 1924
- 48 more...