Dickinson, E. Collected poems of Emily Dickinson, c1982: CIP t.p. (T.W. Higginson)
NUCMC data from Rutgers Univ. Lib. for Whitman, W. Collection of papers, ca. 1839-1921 (T.W. Higginson)
NUCMC files (Higginson, Thomas Wentworth, 1823-1911; full name: Thomas Wentworth Storrow Higginson; unitarian minister; col. of 1st Black Regt. in Union Army; poet)