"shimmery, satin finish" similar to that of an automobile. Top stories The 32nd and 33rd floors consist of projecting sets of piers, between which are pairs of windows. These two stories originally contained the McGraw-Hill executive offices and were designed to emphasize the importance of McGraw-Hill's corporate leadership. A vermillion strip ran underneath the projecting course that surrounded the penthouse. The western and eastern facades are clad with horizontal "ribs" at the 34th and 35th stories. Architectural historian Anthony W. Robins likened the ribbed crown to the "German Expressionism of Erich Mendelsohn". A set of Art Deco-style letters with the words is mounted in front of the 34th story windows. These letters, custom made of terracotta blocks, stood against the blue and green terracotta panels of the facade, concealing the mechanical equipment atop 330 West 42nd Street. They were painted white with orange stripes, but that color was removed when McGraw-Hill sold the building. At some point in the late 20th century, the New York City Landmarks Preservation Commission (LPC) approved a motion to change the letters to "GHI", representing former owner Group Health Insurance, although it was changed back by the 1990s. Features The McGraw-Hill Building contains of interior space. As designed, McGraw-Hill used about three-quarters of the total internal space. McGraw-Hill required about for office space, while another were rented out as office space at a rate of . Lobby The original lobby covered about and led from the 42nd Street entrance to two elevator banks. The lobby's design was a continuation of the exterior, a common trend for Art Deco designs. It originally consisted of a passageway from the 42nd Street entrance, whose walls were decorated with similar dark-green and light-blue bands as the entrance way. There were doorways that led to the bookstore on the left (east) wall and to the bank on the right (west) wall. The elevator lobby contained solid green enamel walls. The elevator doors were made of metal and decorated with bronze stripes, while floor-indicator markers hung above the doorways. Elevator staff wore green uniforms to correspond with the green baked-enamel interiors of each elevator cab. The original lobby was demolished in 2021. The modern lobby contains an atrium measuring high. There was a reception area to the left and a large seating area to the right. Gerard Nocera, a managing partner for the asset manager that controlled the building, said at