Name The Year: Barbara Hershey (in Atlanta, Georgia), actress, born.?

Questions

robert heinlein: editor of astounding sf to whom heinlein made his first sale?

robert heinlein: rah never owned a farm, but often used this pen name?

70s: this famous idaho dam went to pieces in 1976.?

70s: oregans trojan was the most powerful one of these in this decade.?

70s: this nation tried the "gang of four"?