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. XCIX. Maclehose family, publishers and printers, of Glasgow and London; 1858-1938, n.d. Maclehose; publishers and printers: Correspondence with Macmillan and Company: 1858-1938, n.d.
MACMILAN ARCHIVE. Vol. CXX. Correspondence, etc., with J. B. Pinker, literary agent; 1902-1938. J. B. Pinker, literary agent: Correspondence with Macmillan and Co.: 1902-1938.