DARWIN AND CORNFORD PAPERS. Vol. XL (ff. 53). Correspondence, etc., of and relating to her sons, Christopher and John Cornford (d.1936); 1924-1937, n.d. Partly photographs. Partly incomplete.
DARWIN AND CORNFORD PAPERS. Vol. LVII (ff. 124). Prose, verse and a radio play 'The Identity of Indiscernibles'; 1908, circa 1934. Partly autograph, partly typewritten, partly signed, partly printed.