The Oscar Wilde Collection is divided fairly evenly between works and correspondence. Some of the works are by people other than Wilde and a portion of the correspondence is written between people who were associated with Wilde.
Princeton University - Firestone Library - Manuscripts Division
2.5 linear feet 6 boxes 9 bound volumes 6 matted works of art
The J. Harlin O'Connell Collection of the 1890s consists of letters, short manuscripts, some artwork, and a few proofs of English poets, dramatists, novelists, critics, essayists, biographers, journalists, publishers, artists, and actors who were prominent primarily from the 1890s through the 1930s.
Yale University - Beinecke Rare Book and Manuscript Library
64.87 linear feet (367 boxes, including 83 oversize boxes) + 1 art, 4 broadside
The Frederick R. Koch Collection consists of musical, literary, and historical materials collected by Frederick R. Koch, principally through purchases at public auctions, 1979-1986. Including individual items, concentrations of related materials, and several extensive archives, the collection is a broad and deep resource for study of the lives and works of a range of composers, authors, and other historical figures.Most materials are music manuscripts, literary manuscripts, drawings, and correspondence of European, English, and American composers, authors, and artists. Also present are historical manuscripts, photographs, albums, and other papers. While the contents of the collection span the seventeenth to twentieth centuries, most date from the nineteenth to early twentieth centuries, with particular strengths in French, Italian, German, and British music, French literature, and British art.