After almost 30 years, Charley Harper's "Space Walk" mural was unveiled Tuesday night.

Stay up to date with Charley Harper (American, 1922 - 2007) . Discover works for sale, auction results, market data, news and exhibitions on MutualArt.

But what he can't see in the newly uncovered Charley Harper mural at the Duke Energy Convention Center? How anyone would even consider covering the mosaic masterpiece, valued at over $1 million ...

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Sunday Puzzle Each week, New York Times crossword puzzle editor and NPR's Puzzlemaster Will Shortz presents an on-air quiz to one contestant and gives a challenge for listeners at home.