Misc: What was Enrico Carusos claim to fame?

Questions

What was the original name Charles Schultz had for Peanuts?

What was the relationship between Superman and Supergirl?

When Tweety exclaimed, "I thought I saw a putty tat!", who did he see?

When danger appeared, Quick Draw McGraw became which super hero?

When not a Birdman, what does Ray Randall do for a living?