Misc: In 1872 Britain introduced the concept of voting by ---------- ballot. ?

Questions

In 1923 Sir Richard ---------- actor/director (Gandhi, Young Winston), born. ?

In 1923 Sir Richard Attenborough actor/director (---------- , Young Winston), born. ?

In 1929 German airship ---------- ends a round-the-world flight. ?

In 1950 Intl Olympic Committee votes admission to West Germany & ---------- in '52. ?

In 1962 ---------- De Mornay actress (The Hand That Rocker The Cradle), born. ?