Gianfrancesco Penni
Born in Florence to a family of weavers, Penni entered Raphael's workshop very early in his life, and collaborated with him on several works, including the famous Rooms of the Vatican Palace, as well as the frescoes of Villa Farnesina, both in Rome. Heinrich Wölfflin and some other writers credited him with the entire execution of the Raphael Cartoons, with Raphael only creating the initial design, though more recent writers believe Raphael did much of the work himself.
Philip Johnson
It was one thing to build a glass cathedral in California, and another to build a corporate headquarters skyscraper in the center of Manhattan, the showcase of modern architecture. Shortly after the Crystal Cathedral, working in collaboration with John Burgee, he completed one of his most recognizable buildings, the AT&T building (later named the Sony Building, and now 550 Madison Avenue). Built between 1978 and 1982, a skyscraper with an eight-story high arched entry and a split pediment at the top which resembled an enormous piece of 18th-century Chippendale furniture. It was not the first work of Postmodern architecture—Robert Venturi and Frank Gehry had already built smaller scale postmodern buildings, and Michael Graves had completed the Portland Building in Portland Oregon (1980–82) two years before the AT&T Building; and most of the building was in a traditional modernist style; but because of its Manhattan location and size it became the most famous example of postmodern architecture.