Museums and galleries display treasures found out in the field, so finding a piece of history in the museum building itself is a rarity, to say the least. But that's exactly what happened during recent renovations at the National Gallery in London . According to The Art Newspaper , contractors working at the National Gallery's Sainsbury Wing found quite a time capsule during demolition work last year that has just been unveiled. The letter, dated July 26, 1990, was written by John S...
