Members of a San Francisco synagogue has discovered a “treasure trove” of 19th-century art hidden in plain sight on its walls and ceiling. The discovery that two prominent local artists working in concert were responsible for the temple’s beautiful, Renaissance-inspired interior has touched off a renewed round of interest in San Francisco’s often cloudy art history. “The 1906 earthquake and fire destroyed public records and personal papers, erasing much of the city’s artistic history from current memory.”