Correspondence, manuscripts, notes, course related materials, photographs, photostats, and printed materials of Rusk. Included are two small files of correspondence, approximately 100 items, relating to Rusk's editing of THE LETTERS OF RALPH WALDO EMERSON (1939) and to his study of occasional poetry in Colonial America for the Colonial Project in American Literature. The manuscripts include several miscellaneous items by Rusk, and five Columbia University masters essays submitted to him in connection with the Colonial American poetry study. Also, 12,000 note cards relating to this study as well as 150 photostatic copies of books of Colonial American poetry. For the Emerson edition there are 14,000 note cards on Emerson's life and letters. There are also 1,000 note cards for Rusk's edition of THE LETTERS OF EMMA LAZARUS (1939). The Columbia course related materials consist of notes, syllabi, reading lists, bibliographies, examination questions, lists of students and a few letters from them for Rusk's American literature course, 1931-1951. The printed materials are mainly reprints of articles on R.W. Emerson, inscribed to Rusk and containing annotations by him. In addition there are 23 photographs taken by Rusk in 1913, of a Passion Play which was performed in the Philippines.