Misc: The scale used to measure the magnitude of earthquakes?

Questions

New England state mentioned in a Mark Twain title, he also lived there?

Ford Prefect's home was a small planet somewhere in the vicinity of _______.?

He especially liked designing the crinkly bits in fjords.?

She wrote "Valley of the Dolls".?

He is an orphan and the unwanted ward of his sister in 'Great Expectations'?