James Allen, Khalil Gibran, Napoleon Hill, P.T. Barnum, Benjamin Franklin, Orison Swett Marden, Florence Scovel Shinn, Wallace D. Wattles, Russell H. Conwell
James Allen, L.W. Rogers, Napoleon Hill, B.F. Austin, George S. Clason, William Walker Atkinson, Wallace D. Wattles, Russell H. Conwell, Benjamin Franklin, Florence Scovel Shinn, P.T. Barnum, Khalil Gibran