Dallas Theological Seminary (DTS) is an evangelical theological seminary located in Dallas, Texas. It is known for popularizing the theological system known as Dispensationalism. DTS has extension campuses in Atlanta, Austin, Guatemala, Houston, Knoxville, Philadelphia, San Antonio, and Tampa and a multi-lingual online education program. DTS was founded as Evangelical Theological College in 1924 by Dr. Lewis Sperry Chafer, who taught the first class of 13 students, and William Henry Griffith Thomas, who was to have been the school's first theology professor but died before the first classes began. Their vision was a school where expository Bible preaching was taught simply, and under Chafer's leadership, DTS pioneered one of the first four-year degrees in theology, the Master of Theology (Th.M.). The present location of the school was purchased in 1926 and Doctor of Theology (Th.D.) programs were started in 1927. Chafer remained president until his death in 1952. DTS has continually published a quarterly entitled Bibliotheca Sacra since 1934. In 1983, a complete collection of "Bib Sac" articles was published as a book commemorating fifty years of the magazine. Dr. John F.