While this isn't the typical way we track down stories, it certainly was highly entertaining. The Art of the Steal is a must-watch; it's not only moving and compelling, it is thoroughly enjoyable.
So who was Dr. Albert Barnes? Raised in a Philadelphia working-class family, he found extraordinary wealth by inventing a new antiseptic medicine to treat and prevent venereal diseases at the start of the 20th Century. He used his wealth to build what is widely considered to be the greatest collection of post-impressionist art ever assembled. It includes hundreds of works by masters like Renoir, Cezanne, Matisse, Monet, Picasso, Van Gogh . . . and on and on. The collection has been valued at 25 to 30 billion dollars, at least.