21:00Letter from America by Alistair CookeAstronaut John GlennBBC Radio 4 Duration: 15 minutes Fri 28th Feb 1997, 21:00 on BBC Radio 4 LWAvailable for over a yearListen nowJohn Glenn, the first American astronaut to orbit Earth, retires after a lifetime in the public eye.GenresFactualArts, Culture & the MediaBrandLetter from America by Alistair Cooke Source: BBC Online