Although Harrison served on the faculty of Dallas Theological Seminary from 1928–1939 and 1944–1947,[3] he became an important figure in the Neo-Evangelical movement of the mid 20th Century. Harrison was an important figure involved in rejecting J. Gresham Machen's call to leave the Presbyterian Church, and had an on/off relationship with the Dallas Theological Seminary and its President Lewis Chafer, due to Chafer's fundamentalist view of dispensationalism.[4]
^Hannah, John D (2009). An Uncommon Union: Dallas Theological Seminary and American Evangelicalism. Pages 101, 143-144, 339 n.33. Zondervan. ISBN9780310237860