How two refugees warned Roosevelt of the German nuclear threat.
BBC Radio 7
Profiles of entertainers Groucho Marx (1898-1977) and Bing Crosby (1903-1977).
A profile of Reuben Mattus (1912-1994), the co-founder of Haagen-Dazs.
The life of Rudolph Valentino (1895-1926).
The legendary broadcaster recounts his first proper encounter with a native American.
The early days of television in America, as reported by Alistair Cooke.
The assassinations of Lincoln and Kennedy. Plus UN debate on war with Afghanistan.