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*''The Secret Treaties of Austria-Hungary, 1879-1914'' by Alfred Franzis Pribram, Professor of History in the University of Vienna. English edition by Archibald Cary Coolidge. Published 1920 and 1921.Translation of ''Die politischen Geheimverträge Österreich-Ungarns, 1879-1914''. [https://archive.org/details/secrettreatiesof01pribiala Volume I], [https://archive.org/details/cu31924063462646 Volume II] Archive.org.

*[https://archive.org/details/gunsofaugust00tuch_gaq ''The Guns of August''] by Barbara Tuchman 1988. Archive.org Lending Library. A narrative of the earliest stages of World War I, from the decisions to go to war, up until the battles of the first month. [https://en.wikipedia.org/wiki/The_Guns_of_August About the book] Wikipedia. Article [https://www.theguardian.com/commentisfree/2014/aug/03/guns-of-august-barbara-tuchman "''The Guns of August'' showed me how history could bring the past to life"] by Margaret MacMillan ''The Guardian'' 4 August 2014.

*''Germany in Defeat. A Strategic History of the War'' by Count Charles de Souza. [https://archive.org/details/cu31924088055250/page/n5 ''First Phase''] 3rd edition 1916. Joint author Major Haldane MacFall; [https://archive.org/details/cu31924088055268/page/n5 ''Second Phase''] 1916; [https://archive.org/details/cu31924088055276/page/n6 ''Third Phase''] 1916; [https://archive.org/details/cu31924088055284/page/n3 ''Fourth Phase''] 1919. All Archive.org

*[https://archive.org/details/worldwarshortacc00fieb ''The World War: a Short Account of the Principal Land Operations on the Belgian, French, Russian, Italian, Greek and Turkish Fronts''] by Colonel G J Fiebeger 1921 Archive.org.

*[https://archive.org/details/firstworldwar00tayl/page/n1 ''The First World War : an Illustrated History''] by A J P Taylor. 1980? edition, originally published 1963. Archive.org Books to Borrow/Lending Library.

*[https://archive.org/details/firstworldwar00keeg_0 ''The First World War''] by John Keegan 1999. Archive.org Books to Borrow/Lending Library. Considered to be a "good" [overview].<ref name=Cru/> [https://www.penguinrandomhouse.com/books/90863/the-first-world-war-by-john-keegan/9780375700453/ About the book] penguinrandomhouse.com which says "The definitive account of the Great War and national bestseller".

*''History of the Great War based on Official Documents: Seaborne Trade'' by C. Ernest Fayle 1920 -1924. [https://archive.org/details/seabornetrade01char ''Volume I : The Cruiser Period'']; [https://archive.org/details/seabornetrade02char ''Volume II: From the Opening of the Submarine Campaign to the Appointment of the Shipping Controller'']; [https://archive.org/details/seabornetrade03char ''Volume III: The Period of Unrestricted Submarine Warfare''] Archive.org.

*''Official History of the War: History of the Great War based on Official Documents''. [http://dspace.gipe.ac.in/xmlui/handle/10973/24853 ''History of the Blockade of Germany and of the countries associated with her in the Great War: Austria-Hungary, Bulgaria and Turkey, 1914-1918''] by A C Bell 1961 HMSO. Reprint of 1937 original edition, which was for official purposes only and was not generally released. Pdf download Digital Repository of GIPE, Gokhale Institute of Politics and Economics [Pune India]. Note, there are two downloads. The first download is an extract of 149 pages , consisting of Contents etc and Appendices, out of a total of 845 pages. The second download is the entire book.