Art conservancy can well be divided into two areas--preserving and restoring. Margaret Watherston, a New York conservator, recalls being faced with a cleaning problem that on an old master would have been a relatively routine job. But because Pop artist Morris Louis had soaked paint into unprimed canvas, she had to concoct a very complicated process specifically to deal with the damage.
It seems that a family dog had heartily disapproved of the painting and left a conspicuous yellow stain in one corner. Everyone's a critic nowadays!