The latest additions to The Great Unsolved Mysteries in Canadian History Project were published today. When I took a look at the three new mysteries I was reminded what a powerful addition to the teaching of Canadian history that this collection is. The new mysteries: “The Redpath Mansion Mystery”, “Death on Painted Lake: The Tom Thomson Tragedy,” and “Death of a Diplomat: Herbert Norman and the Cold War” keep raising the bar of how to effectively present material using the web. The project is a collaborative effort amongst Canadian historians to provide engaging and fun teaching tools directed towards high school and university level students. The mysteries are presented as self-contained websites, each one with its own theme and approach. Typically they provide compelling narratives and also offer a wealth of primary documents and other source material to aid in learning about Canadian History and historical methods. With the addition of these new modules, the breadth of the site is reaching a point of critical mass and offers a nicely diverse collection from throughout time and geographic area.