Misc: What year saw the 50th anniversary of the Bttle of Britain?

Questions

In 1963 Charles---------- , Star player for the Pheonix Suns and Houston Rockets basketball teams, born.?

In 1972 President ---------- visits China.?

In 1985 Clarence---------- , the voice of Donald Duck, died.?

In 1804 First self-propelled ---------- on rails demonstrated, in Wales.?

In 1858 First electric ---------- is installed in Boston, Mass.?