There are a wealth of historic resources at the website for my book on the Alaska Railroad construction from 1902 to 1923. Most of the resources I used in researching the history and writing the book are there.
Link to the 1913 Congressional Report of the Alaska Railroad Commission, on Railway Routes in Alaska.
Below is an excerpt from this report, a message from President William H. Taft dated February 6, 1913, in which he explains the purpose and meaning of the commission report.
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Link to the Congressional Report of the Alaskan Engineering Commission for the period from March 12, 1914 to December 31, 1915.
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1922 Report on The Alaskan Engineering Commission: Its History, Activities and Organization.
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Read more history: Website for the Book
The Alaska Railroad: 1902-1923, Blazing an Iron Trail Across The Last Frontier, by Helen Hegener, published in May, 2017 by Northern Light Media. 400 pages, over 100 b/w historic photos, maps, bibliography, indexed. The book can be ordered via PayPal for $24.00 plus $5.00 postage, by clicking here (credit cards accepted). The Alaska Railroad: 1902-1923 is also available at Amazon, and can be ordered through your favorite bookstore.