The Presbyterian Publishing Corporation (PPC) is the denominational publisher for the Presbyterian Church (U.S.A.), but the materials it issues under its Westminster John Knox Press imprint cover the spectrum of modern religious thought and represent the work of scholarly and popular authors of many different religious affiliations. PPC's Geneva Press imprint is for a specifically Presbyterian audience. PPC publishes approximately 75 new books and other resources each year and manages a backlist of more than 2,000 titles that are sold throughout the world. In addition, PPC produces and mails the These Days devotional magazine four times a year. PPC operates The Thoughtful Christian, an online, ecumenical resource center located at www.TheThoughtfulChristian.com. The Thoughtful Christian contains more than 500 units for adult and youth education programs, and also sells books from a variety of publishers. The units cover topics in the following areas: Bible and theology, Christian living, spirituality, contemporary issues, and popular culture.