Concordia Publishing House (CPH), founded in 1869, is the official publishing arm of the Lutheran Church–Missouri Synod. Headquartered in St Louis, Missouri at 3558 S. Jefferson, CPH publishes the Synod's official magazine, The Lutheran Witness and the Synod's hymnals, including The Lutheran Hymnal (1941), Lutheran Worship (1982), and Lutheran Service Book (2006). It has published a comprehensive edition of Johann Sebastian Bach's Orgelbüchlein, complete with short analyses of each chorale. It publishes a wide range of resources for churches, schools, and homes and is the publisher of the world's most widely circulated daily devotional resource, Portals of Prayer. Their children's books, known as Arch Books, have been published in millions of copies. Over 850,000 copies of this resource ar