Arizona State University-Tempe, Special Collections, University Libraries (Hayden Library). Arizona State houses one of the most extensive collections of Mosher imprints and related material. The nearly complete collection of books in first and later editions and variants, covers 69.5 linear feet, including books from Mosher’s library. Dr. Nicholas Salerno, in tandem with the Head of Special Collections, Marilyn Wurzburger, were the vigilant assemblers of the collection. In nine boxes there are also housed publishing materials, book lists, catalogue order forms, reviews, correspondence, financial records, estate and legal papers, personal items, photographs, and other memorabilia covering the period 1893-1929 (a list of this material is available). The manuscript material is the result of a gift from Thomas Bird Mosher, Jr. in 1970, and the purchase of a collection assembled by Oliver Sheean augmented the collection in 1985. The collection also has a number of Mosher books in fine bindings.
Harvard University, The Houghton Library. In 1948 Oliver C. Sheean gave The Houghton Library over 1,650 manuscript items from The Mosher Press. This vast collection includes material relating to the mock Italian operetta, Il Pesceballo, by Francis James Child and James Russell Lowell, material relating to the controversy over charges of publishing piracy, and material on Mosher’s literary magazine, The Bibelot. Correspondents represented by 15 or more items include James Lane Allen, George F. R. Anderson, Lucie Elizabeth (Page) Borden, Gordon Bottomley, William Aspenwall Bradley, William Stanley Braithwaite, Mrs. M. N. Dana (“Paul Allan”), Ernestine Louise Foster, Katherine (Tynan) Hinkson, Richard Charles Jackson, Mitchell Kennerley, Walter E. Ledger, Richard LeGallienne, John Loder, Edward McCurdy, Christopher S. Millard (Stuart Mason), Louise (Chandler) Moulton, Grace Fallow Norton, William Marion Reedy, Lizette Woodworth Reese, George William Russell, Elizabeth Amelia Sharp, Clement King Shorter, Edith Matilda Thomas, and Anne Montgomerie Traubel. The Houghton and other university libraries at Harvard collectively house about 585 of the Mosher books (492 from 1891-1923 and 93 post-1923).
University of San Francisco, Donahue Rare Book Room at The Richard A. Gleeson Library. The rare book room houses the vast majority of the Norman A. Strouse Collection. Strouse assembled one of the finest Mosher collections, and purchased the personal papers and manuscripts kept by Harrison Hume Mosher (Mosher’s oldest son). Included with these papers are many photographs, correspondence, copyright receipts and assignments, Mosher’s own poetry and essays (written under the pseudonym Richard Charles Merrill) showing his intense literary and intellectual activity from 1865-1871, legal documents, and typescripts. The manuscript portion of the collection is particularly rich in material written prior to 1875. The Mosher books cover 48 linear feet, and include many of the Japan vellum and pure vellum copies. The collection also has a number of Mosher books in fine bindings.