1922 - A.C.C. Lecture Week, Abilene Christian College, G.A. Klingman, J.P. Sewell, John T. Smith, F.L. Rowe, Thos. E. Milholland, J.N. Armstrong, Ira L. Winterrowd, G. H.P. Showalter, C.J. Robinson, R.D. Smith, T.M. Carney, W.F. Ledlow, T.H. Etheridge, Jas. F. Cox, H.E. Speck, A.B. Barrett
Lectureship and Summit Programs

1921 - A.C.C. Lecture Week, Abilene Christian College, H.E. Speck, David L. Cooper, Early Arceneaux, A.R. Holton, Liff Sanders, A. LeRoy Elkins, A.O. Colley, F.W. Smith, W.G. Malcomson, G.C. Brewer, J.P. Sewell, G.C. Vincent
Lectureship and Summit Programs

1919 - A.C.C. Bible Lecture Week, Abilene Christian College., Geo A. Klingman, H.E. Speck, M.D. Gano, A.R. Holton, J.U. Yarbrough, Cled E. Wallace, G. Dallas Smith, F.L. Young, Jon Straiton, F.B. Shepherd, Batsel Baxtor
Lectureship and Summit Programs

1918 - A.C.C Lecture Course, Abilene Christian College, T.W. Phillips, O.E. Phillips, G.A. Klingman, C.C. Klingman, J.H. Lawson, H.E. Speck, J.P. Sewell, G.W. Cypert, Liff Sanders
Lectureship and Summit Programs