Misc: what century saw the discovery of krypton??

Questions

Category: Marx Movies: Groucho: One morning I shot an elephant in my pajamas?

Category: Marx Movies: He was the oldest of the brothers?

Category: Marx Movies: I am sure the familiar strains of Verdi's music will come back to you....?

Category: Marx Movies: In this movie Groucho is a business manager to Mrs Claypool?

Category: Marx Movies: The name of the character played by Groucho in 'A Day at the races'?