'Great Northern Semaphore', Volume 5, Number 3, March 1928, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Big Trees and Plenty, A Remarkable Group, Moscow Idaho, ?The Empire Builder?, The ?Helen Vinmont? and Her Skipper, The Puget Sound Navy Yard at Bremerton, The Park Department Speaks Up, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Kiddies? Group, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 4, Number 3, March 1927, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Kettle Falls and Fort Colville, Treating Ties for the Great Northern, Proposed Merger, Class Z Electric Engines, Our Directors F.E. Weyerhauser, Dakota Division Forty Years Old, Larimore in 1892, The Fireless Locomotive, He Knew the Great Northern, Along the Line, Children?s Health Page, Club Activities, Courtesy Counts, Division News, Editorial, Fashions, Honor Roll, Kiddies? Picture Page, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 3, Number 3, March 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: Minneapolis, New Snow Dozers, Dogged Will Do It, Do You Save Your Semaphores?, Meet the Mayors, Smut-Fighting It, Amazing Record-Engine No. 959, The Garden Cup, The Viele Fund, The Duluth Winter Frolic, Business Getters, Children?s Health Page, Club Activities, Current Events, Division News, Editorial, Fashions, Honor Roll, House Plans, Kiddies? Picture Page, Meritorious Mention, Pullman Paragraphs, Reminiscences, Safety First, Veteran?s Corner, What They Say of Our Railroad, Women?s Page.

'Great Northern Semaphore', Volume 2, Number 3, March 1925, 36 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Repairing Rails in Place, Falsen Becomes Verendrye, Fuel Economy, Our Operating Ratio, Pullman Paragraphs, The Transportation Act, Resolution of B. R.T. Lodge 572. Children?s Page, Club Activities, Division News, Editorial, Fashions, Honor Roll, Puzzles, Safety, Sports, With Our Poets, Women?s Department

'Great Northern Semaphore', Volume 5, Number 6, June 1928, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Making Railroad History, Finishing the Trip to Klamath Falls, Four Days of Delight, Where the Pines and Prairie Meet, Lumber Expert Invents Saw, Railway Barge Launched, The Wenatchee Apple Blossom Festival, Great Northerner Was with ?Princess Pats?, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Kiddies? Group, Meritorious Mention, Safety First, Veteran?s Corner, Women?s Page.

'Great Northern Semaphore', Volume 4, Number 6, June 1927, 44 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Tacoma Washington, A Commercial Miracle, Featuring North Dakota Industries, Coeur d?Alene, Great Northern Surgeons to Meet, Concrete Illustrations of Big Brother Movement, Spectacular Oil Fire at Sunburst, Business Getters, Children?s Health Page, Club Activities, Division News, Editorial, Honor Roll, Kiddies? Group, Meritorious Mention, Safety First, Veteran?s Corner, What They Say, Women?s Page.

'Great Northern Semaphore', Volume 3, Number 6, June 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: Rising Wolf Mountain Glacier Park, Relation of Highway Transportation to the Railway (concluded), Reclaiming the Kootenai, Navigation on the Danube, Glacier Park Improvements, One Hundred Years of Railroads, Dale Street Gardens, Priest River a Potential Resort, Apple Blossom Festival 1926, 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 6, June 1925, 36 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by W.N.S. Ivins. Articles include: Lignite Coal Mining, Reorganizing Siberian Railway, Trainloads of Buicks, Great Northern in Bus Business, Like Fathers Like Sons, Woman Is Chief Pumper, Supervisors Have Big Time, First Man Through Cascade Tunnel, Rugby Has Right Idea, A New Device, Railroad Boys in Troop 47, An Appreciation of F. E. Gerish, Car Department Men at St. Paul Exhibit. Children?s Health Page, Club Activities, Division News, Editorial, Fashions, Puzzles, Reminiscences, Safety First, Sports, Women?s Page, Veterans? Corner, Honor Roll, Pullman Paragraphs, Kiddies? Picture Page.

'Great Northern Semaphore', Volume 5, Number 7, July 1928, 32 pages. A monthly publication of the Great Northern Railway Company, Saint Paul, Minnesota, it was edited by Edward F. Flynn. Articles include: Winnipeg A Great City, Great Northern Veterans at Winnipeg, Monarchs of Sea Air and Rails, Superior the Nation?s Summer Capital, Electrocuting Insect Pests, Maker of Fine Furniture, A Son of Denmark, Children?s Health Page, Club Activities, Division News, Editorial, Honor Roll, Kiddies? Group, Safety First.

'Great Northern Semaphore', Volume 4, Number 7, July 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 Land of Shining Mountains, One of the Pioneers Goes Home, The Beginnings of Steam Railroads, Equipment Built at Great Northern Shops, Timber Treating Plant at Hillyard, What Might Have Been, Appalling Fire Loses, Great Northern Veteran Surgeon, Children?s Health Page, Club Activities, Division News, Editorial, House Plans, Kiddies? Group, Safety First, Veteran?s Corner, Women?s Page.