The collection consists of works, correspondence, a diary (1851), financial papers, biographical material, a bibliography, and printed matter of Miller (Princeton Class of 1836). The collection reflects the theological controversy in which Miller became involved (1877) resulting in his withdrawal from the Presbyterian Church, the establishment of an independent church in Princeton (1880), and his later association with the Cumberland Presbyterian Church (1893). Included are his hymns, poetry, articles, essays, lectures, sermons, English translations of Genesis, Job, Ecclesiastes, and Matthew, and papers from his graduate student days at the Princeton Theological Seminary (1839-1840); letters to him by Walter Lowrie, H. A. Boardman, Charles Hodge, Samuel Miller, and others; some letters by him to his wife, Sally McDowell Miller, and his son, Alamby Millington Miller, and letters to newspaper editors and public officials; and plans setting forth the need, scope, system of teaching, and endowment of a research university at Princeton ("A University for Discoverers").