2013 Event A private collection of 1,500 works of art plundered by the Nazi's and discovered in a Munich apartment in 2012, has an estimated worth of $1 billion; lost works include paintings by Matisse, Paul Klee, Marc Chagall and Picasso 2013 Event Investigators on the case of the October 2012 Kunsthal gallery theft of paintings by Picasso, Matisse and Monet, discover paint, canvas and nails in the oven of a woman whose son has been charged with the crime 2013 Event In England, a man is arrested for charges related to the attack on 'The Hay Wain' painting, completed by artist John Constable in 1821; the work is considered one of England's greatest and most popular paintings 2011 Event The auction record for paintings by Sir Stanley Spencer were broken twice within minutes at Sotheby's in London 1993 Death Richard C Diebenkorn, Jr., U.S. painter (Ocean Park Paintings), dies at 70 1990 Event Largest Art robbery in the history (Isabella Stewart Gardner Museum in Boston), where 12 paintings valued at $100 million are stolen 1986 Event It's revealed Andrew Wyeth had, secretly created 240 drawings and paintings of his neighbor Helga Testorf, in Chadds Ford, Pennsylvania 1985 Event Thieves steal 9 paintings, including 5 Monet's and 2 Renoir's 1940 Event 4 teens, following their dog down a hole near Lascaux France discover 17,000-year-old drawings now known as Lascaux Cave Paintings 1931 Birthday David Shepherd, born in Britain, painter, artist, considered world's most famous conservationists, famous for paintings of wildlife 1922 Birthday Richard C Diebenkorn, Jr., U.S., painter, Ocean Park Paintings 1909 Birthday John Baur, museum director/author, American Paintings in 19th Century 1599 Event Caravaggio's 1st public commission for paintings 1512 Event Michelangelo's paintings on ceiling of Sistine Chapel, 1st exhibited