The collection consists of selected correspondence (letters, notecards, and postcards), poetry, and a typed essay, all signed either by William Sharp or under his pseudonym, "Fiona Macleod." The bulk of the correspondence is between Sharp and the novelist James Stanley Little. Sharp talks about his "cousin" Fiona Macleod and her new book, Pharais, his travels, his health, his financial problems, and about Hall Caine and Dante Gabriel Rossetti. Included are letters to the English publisher John Lane regarding dinner invitations, jobs, books published, engravings in his books, and letters to the writer Coulson Kernahan. There also are letters from Sharp to the editors of Harper's Magazine and the Quarterly Review of Literature in New York regarding his essays and poems.

The collection includes six letters of Fiona Macleod. One to the editor of the London Daily Chronicle gives the address of her private secretary and typist, who is also the sister of her cousin (i.e., Mary Sharp). Another (to "Dear Sir") states that she does not consent to reproductions of her portrait. There is also a letter sent to a Rev. Wilkins Rees from Mary Sharp accompanied by a photograph of her, on the verso of which she writes that this is a portrait of Fiona Macleod's sister who did all the writing and typing for her. Also included is correspondence of Elizabeth Sharp to James Stanley Little and miscellaneous correspondence and autographs of Mrs. Sharp's brother, Robert Farquharson Sharp.

Holograph poems include "On Mont St. Victoire," "Buon' Riposo," "Innismore and London," and "On the Tidings from Venice." The typescript of a two-part essay labeled "The Irish Muse," which was published in the North American Review (1904), contains corrections and annotations by Mary Sharp. Also included are a poem titled "A Dream" (from With the Wild Geese, 1902) by Emily Lawless, a letter to Mr. Gilman, and a newspaper clipping of an obituary of the author Mrs. Thomas A. Janvier (Catherine Ann Drinker, a friend of Elizabeth Sharp), which were all tipped in a book written by Fiona Macleod.