Correspondence with J.S.L. Gilmour (1906-1986), botanist and horticulturalist, concerning Crawshay-Williams's writings. There is correspondence between Gilmour and A.J. Ayer and others about Crawshay-Williams, including Michael Williams, Rob Winkelmeijer (with a bibliography of Crawshay-Williams), and concerning the memorial occasion for Rupert and Elizabeth.

See also Rec. Acq. 501.