'Great Northern Semaphore', Volume 5, Number 12, December 1928, 32 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: The Sheep Industry in Montana, What Improved Transportation Has Done for the Lumber Industry, In the Klamath Country of Oregon, Making Carbon Black, How Strangers Became Friends, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Honor Roll, Meritorious Mention, Veteran?s Corner.

'Great Northern Semaphore', Volume 4, Number 12, December 1927, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: The New Klamath Basin, Neat As a Pin, What Might Have Been, Attracting Worldwide Attention, Comments on Great Northern Valuation, The Tale of the Tie, The Honeymoon Express, The New Newport Bridge, Children?s Health Page, Club Activities, Division News, Editorial, Employes? Homes, Kiddies? Group, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 3, Number 12, December 1926, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Great Northern to Build from Richey to Circle Montana, Our Directors Albert C. Loring, The Legend of Prophet?s Cut, Astonishing Records Being Made, Queen Marie on Great Northern, Charles M. Russell Passes On, Packing Plant Celebrates, Our St. Louis Office, Children?s Health Page, Club Activities, Division News, Editorial, Fashions, Honor Roll, House Plans, Kiddies? Picture Page, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 2, Number 12, December 1925, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Winter in the Rockies - Battlement Mountain from near Gary (Montana), Washed Gravel Ballast, Under the Big Top, Spokane Railroad Postoffice, Power Plants Along the Great Northern, Cross Crossings Cautiously, Trimmed for the 4th at Fergus Falls, More About Service, Great Northern Gulliver, More about Chicago Union Station, Scobey Work Advancing. Children?s Health Page, Club Activities, Division News, Editorial, Employes? Homes, Fashions, Honor Roll, House Plans, Kiddies? Picture Page, Meritorious Mention, Portrait Gallery, Pullman Paragraphs, Puzzles, Reminiscences, Safety, Women?s Page, Veterans? Corner, What They Say of Our Railroad.

'Great Northern Semaphore', Volume 5, Number 8, August 1928, 32 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: The Pacific Salmon A World Food, Brewster Bridge over the Columbia River, Great Northern Storekeepers Meet, Warning to Switchmen and Their Families, Lewistown Montana Has Silver Jubilee, A Real Booster for His Community, Great Northern Surgeons Meet, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Meritorious Mention, Safety First, Veteran?s Corner.

'Great Northern Semaphore', Volume 4, Number 8, August 1927, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Lewis and Clark Bridge Dedicated, Remarkable Miniature Railway, Aerolite Makes Alternating Current, Cascade Tunnel Crews Make Record, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Employes? Homes, Kiddies? Group, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 3, Number 8, August 1926, 48 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Devils Gulch Garretson S.D., The Roll of the Drums, Great Northern Service, Bound to Work for the GN, Keep Mail Trains Fit, Storekeepers? Meeting, The Cleveland Office, Zonolite, Scenes of Interest at Belton Montana, Fine Store at Mississippi Street, Indian Princess Popular, Children?s Health Page, Club Activities, Current Events, Division News, Editorial, Employes? Homes, Fashions, Honor Roll, House Plans, Kiddies? Picture Page, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 2, Number 8, August 1925, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Reinforcing Columbia River Bridge, Chicago's New Station, Saint Paul Headquarters City, Upper Missouri Historical Expedition, Par at Scobey, The New York Office, Claim Agents' Convention, Another Beauty Spot - Dale Street Shops, Tower Score Boards, Havre Homes of Great Northern Employes, Kalispell Dude Ranch, Great Northern Surgeons Convention, Where is St. Cloud ?, Troy Terminal Improvements. Children?s Health Page, Club Activities, Division News, Editorial, Fashions, Puzzles, Reminiscences, Safety First, Sports, Women?s Page, Veterans? Corner, Honor Roll, House Plans, Pullman Paragraphs, Kiddies? Picture Page.

'Great Northern Semaphore', Volume 5, Number 4, April 1928, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: New Saco-Turner Branch Line, On Valley, A Popular and Profitable Occupation, Lignite Coal Loading in North Dakota, A Tribute to P.L. Clarity, ?Why Stop the Business of the Busy World??, A Page of Employes? Homes, More Than Half a Century in Great Northern Service, New Station Superintendent, Children?s Health Page, Club Activities, Division News, Editorial, Kiddies? Group, Meritorious Mention, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 4, Number 4, April 1927, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Duluth The Zenith City, Superior Wisconsin, Head of the Lakes District, Storage Facilities, Our Directors Jackson E Reynolds, Duluth Terminal Facilities, Great Northern Instruction Train, Along the Line, Children?s Health Page, Club Activities, Division News, Editorial, Fashions, Honor Roll, Kiddies? Picture Page, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.