Raise your hand if your card collection is more valuable (at least on paper) today than it was a year ago. That's what I thought. I'm fortunate to have lived long enough to reap some financial benefits. Vincent van Gogh wasn't so lucky. He struggled throughout his life. But now, of course, his paintings and drawings are worth millions. How did this occur? His sister-in-law made all the difference by packaging his paintings with his letters to his brother Theo. Learn more about how she made Vincent's artwork worth millions at www.markearzoumanian.com.