Wayne C. Temple worked at the Illinois State Archives from 1964 to 2016. The latest in his long list of Lincoln publications is Lincoln's Surgeons at His Assassination. Douglas L. Wilson is the director of the Lincoln Studies Center at Knox College, in Galesburg, Illinois. Rodney O. Davis (d. 2019) was co-director of the Lincoln Studies Center at Knox College. They are coeditors of Herndon's Informants: Letters, Interviews, and Statements about Abraham Lincoln; Herndon on Lincoln: Letters; The Lincoln-Douglas Debates; and Herndon's Lincoln.