Since retirement in 1996, I have published five works: Frank Blair: Lincoln's Conservative (University of Missouri Press, 1998); The History of Phi Gamma Delta, 1925-1996 (The Fraternity of Phi Gamma Delta, 1998); Westminster College, An Informal History, 1851-1999 (Westminster College, 2000); A History of Missouri, 1860-1875, rev. ed. (University of Missouri Press, 2001); Missouri: The Heart of the Nation, 3d ed., with Charles T. Jones, Jr. & Lawrence Christensen (University of Missouri Press, 2004).

I have also seen the completion of a six-volume history of Missouri, published by the University of Missouri Press, in 2004, for which I served as General Editor, which began in 1971, thus finishing a thirty year project. In spring 2000 I served as Aspinall Professor of History at Mesa State College, Grand Junction, Colorado. I also continue active on the lecture circuit, as Historian for the Fraternity of Phi Gamma Delta, and in various capacities in Phi Alpha Theta and the Mississippi Historical Society.