"Mount Zion refers to an Orthodox Jewish cemetery in Queens, New York, built in 1893, sandwiched between a New York City Sanitation plant and the Long Island Expressway. ''Sepulchral portraits'' refer to miniature photographs once placed on many of Mount Zion's tombstones, a custom brought over by Jewish immigrants from Eastern Europe. These images--often heavily retouched--were burned onto porcelain or metal tablets, and then glazed. The process was, at the time, advertised as permanent; but the ravages of the elements, pollution, and vandals have transformed these portraits into something else altogether. ...."