Dr. Wolfe drew upon many of the letters and books he collected in writing his books LITERARY SHRINES OF AMERICAN AUTHORS, 1895; A LITERARY PILGRIMAGE AMONG HAUNTS OF BRITISH AUTHORS, 1896; LITERARY HAUNTS AND HOMES, AMERICAN AUTHORS, 1898; and ITERARY RAMBLES AT HOME AND ABROAD, 1900. There is also a miscellaneous file of clippings, notes, and photographs about authors, and a large group of stereoptican slides collected during Wolfe's travels in the northeast states.