The Spalding Family Collection, which dates from 1832 to 1997, consists of the correspondence, journals, unpublished manuscripts, speeches, and sermons of Reverend Henry Harmon Spalding. Also included are accounts of and investigations into, the death of the Whitmans at Waiilatpu including speeches, questionnaires and notes for United States Congressional hearings. Newspaper clippings, magazine articles and papers by and about Reverend Spalding are also held in this collection. The collection also contains the personal correspondence writings of his wives, Eliza and Rachel, as well as materials related to his son, Henry Hart Spalding.