MACMILLAN ARCHIVE. Vol. CCLXXIII. Correspondence with John R. Green; 1869-1882. John Richard Green, historian: Correspondence with Macmillan and Co.: 1869-1882.
MACMILLAN ARCHIVE. Vol. IV. General correspondence of members of the Macmillan family with each other and the firm; 1863-1960, n.d. Macmillan family, publishers: Correspondence: 1869-1960.
MACMILLAN ARCHIVE. Vol. CCCXXXIV. Correspondence with Professor William W. Goodwin; 1880-1905. William Watson Goodwin, Professor of Greek at Harvard University: Correspondence with Macmillan and Co.: 1880-1905.
MACMILLAN ARCHIVE. Vol. CCCXLIV. Correspondence with Sir Arthur Evans; 1892-1941, n.d. Sir Arthur John Evans, archaeologist: Correspondence with Macmillan and Co.: 1892-1941, n.d.
MACMILLAN ARCHIVE. Vol. CDLXII. Correspondence with Sir Thomas L. Brunton; 1875-1916, n.d. Sir Thomas Lauder Brunton, 1st Baronet; physician: Correspondence with Macmillan and Co.: 1875-1916, n.d.
MACMILLAN ARCHIVE. Vol. CCCXI. Correspondence with Richard C. Trench, Archbishop of Dublin: 1864-1885. Richard Chenevix Trench, Archbishop of Dublin: Correspondence with Macmillan and Co.: 1864-1885.