Series consists of Edel's notebooks, including address books, diaries, journals, and travel notes.

Series consists of reviews of Edel's books on Henry James.

Series consists of ephemera related to Edel.

Series consists of assorted financial records from Edel.

Series contains clippings and off-prints by various writers

Series consists of clippings, notes, papers and other ephemera collected by Edel on various significant literary figures. One thematic file is devoted to 19th-century English literature.

Series consists of clippings and off-prints about Edel and other authors including Willa Cather, Ezra Pound, and William Yeats.

The series contains Leon Edel's correspondence, with the majority before 1989. The correspondence ranges from personal to professional and literary, with letters from friends, acquaintances, scholars, authors, and publishers, such as Harvard University Press. Files that are significant either because of the correspondent or due to the extent of the correspondence include W. W. Norton, Anais Nin, Hannah Arendt, E. M. Forster, H. Montgomery Hyde, Geoffrey Keynes, and Allen Ginsberg. Many of the letters represent Edel's ongoing work to acquire copies of Henry James's correspondence and seek out information about the author from his contemporaries. Also includes a number of letters related to various lectures given during the 1960s and 1970s.

Series consists of Edel's notes and research files on James Joyce. Also includes Edel's publication "Joyce: The Last Journey," with revisions and related clippings and correspondence.

Series consists of correspondence with James family members, including Alice R. James, Dorothea James, Edward H. James, Henry James III, John James, Margaret Mary James (Mrs. Bruce Porter), William James III, Mary James Vaux, and Henry James Vaux.