Alpha History is a free online textbook and resource centre for history teachers and students. Our 11 sections span popular historical periods – from the American Revolution in the late 18th century to the Troubles in Northern Ireland in the late 20th century. More sections are under construction for 2015. Each section contains hundreds of resources including topic summaries, documents, images, maps, timelines, biographies of significant individuals and historiographical information. Alpha History also contains a range of online activities, such as quizzes and crosswords. All content at Alpha History is written, reviewed and selected by qualified teachers, writers and historians. Alpha History is suitable for students at middle school, high school and undergraduate levels. Alpha History also develops and publishes low cost mobile applications for the Apple iPad, iPhone and iPod Touch.