Karin Sander's Patina Paintings are created at--and by--the site of their exhibition. Sander transports blank canvases to the exhibition venue and leaves them outside, unprotected, to accumulate the patina of their location as chance and the whims of nature determine. The results are delicate abstractions resembling the mark-making of John Cage or Cy Twombly. This handsome monograph records the series.