Unknown Programme, Possibly Animal, Vegetable, Mineral? Letter from David Attenborough, of the BBC Television Talks Department, to Haldane. Attenborough suggests that a planned talk using objects from the Science Museum should be postponed until some more relevant biological objects can be provided. [Possibly referring to the programme Animal, Vegetable, Mineral?, which was produced by Attenborough at the time] 7 Jan 1953