16th Century Gunpowder 1979 Chris Burden 16th Century Gunpowder Mortar, pestle, charcoal, potassium nitrate, sulfur, and printed text on paper in glass and wood vitrine 12 1/8 x 25 x 12 in. (30.8 x 63.5 x 30.5 cm) Restricted gift of Angela and Rudolf Rossmann