THE ARTS: Which American architect developed geodesic domes?

Questions

sci fi: in lord valentine's castle, valentine's profession until his memory returns.?

people: bernard ______ was an industrial and economic advisor during wwi and wwii?

people: director of the fbi who lived from 1895-1972.?

people: the first name of the american statistician who established the gallup poll?

people: american dramatist whose plays include death of a salesman and the crucible.?