This collection contains numerous articles and papers written by Luebben throughout his career, in addition to materials for the courses he taught at Grinnell, personal correspondence, clippings, photos, and writings by colleagues.

Materials related to the Grinnell College experience of Virginia "Ginny" Lobell Rosen, class of 1948.

This collection consists of seven handwritten letters from Sen Katayama to L.F. Parker (one with its original envelope), written from 1895-1898, the manuscript copy of Katayama's Master's thesis, and one photocopy of the thesis. Additionally, the collection includes two small notes believed to be from L.F. Parker.