Misc: Which colourless, odourless light gas is used to lift airships?

Questions

Where is the town North Pole located?

During the Industrial Revolution a toilet was simply a glass or metal jar that people emptied by simply tossing its contents into the street below. It was a common courtesy to warn the passerby with the shout ‘gardyloos’. What does Gardyloos mean?

What breed of dog was Nipper, the RCA dog?

What is the title of the RCA painting of Nipper & the phonograph that we know of as ‘His Master’s Voice’?

Who was Bob Dylan referring to on his song, ‘Sad Eyed Lady of the Lowlands’, on the hit album, ‘Blonde on Blonde’?