The assassination of Archduke Ferdinand was the first step in what was to become a global conflict. When the United States entered the war on the side of the Allies, most believed that the “war to end all wars” would soon be over. This reference covers WWI from the sinking of the Lusitania to the Treaty of Versailles, beginning each chapter with an excerpt from a song, poem, letter or speech from the time. There are maps, photographs, posters and paintings throughout the book, but I was disappointed that there was so little primary source text material.  The book ends with a timeline, glossary and a list of resources for further reading. I would only recommend this for 4-7th grades; it does not have the depth of information necessary for any kind of research at the secondary level.