Congratulations to Chris who has qualified for the Telluride Bluegrass Festival by answering today's Colorado Trivia question.  I had asked what "invention" is honored by a granite marker at 2776 N. Speer in Denver.  The answer:  cheeseburger!  There remains much debate across the country as to who created the cheeseburger but Louis Ballast applied for the trademark in 1935 while running the Humpty Dumpty Drive In.