What year was the first pair of stereo headphones produced?

More Questions:

What soft drink line was named after a competitor's unusually tall bottles?

What item of clothing was Ralph Lauren's first product?

In which direction do speed skaters race?

Who is Othello's wife?

What type of animals were Napoleon and Snowball in the George Orwell book "Animal Farm"?

What detective was created by Dashiell Hammett in his novel, "The Maltese Falcon"?

What is the largest country in Africa in terms of land size?

What was the name of the Apollo 11 lunar module?

If you are afraid of flying, what phobia do you have?

How many fingers does Mickey Mouse have?

In the TV series "Leave It To Beaver', what was Wally's best friend's name?

What Spanish explorer is credited with discovering the Pacific Ocean?

What is the chemical symbol for Californium?

What is the name of Roy Rogers' horse?

In which territory is Australia's capital city located?