the time: "It's going to be a lobby tenants will gravitate toward and will want to hang out in." Upper floors Industrial uses were placed on the second through tenth floors, which were larger and relatively poorly lit, while offices were placed on the smaller, better-lit upper floors. The industrial stories were largely designed for functional purposes, with elevator banks at the center of each floor. The ceilings of these industrial stories were generally between tall and the floor slabs were intended to support heavy loads. The printing plant was placed below the sixth-floor setback while the book production was housed in the loft space above the setback. The bindery was on the fifth floor, the press room on the sixth floor, and the composing room on the seventh floor. These stories were converted to standard office space by 1933. The upper stories were designed in a relatively simple style characterized as "Raymond Hood Colonial". The ninth through 15th floors had been exclusively intended for rental use, while McGraw-Hill generally occupied the 16th to 33rd floors. On the office floors, the natural light illuminated each story to a depth of . Few partitions were erected on these stories, creating an open plan with various open spaces for McGraw-Hill's subsidiaries. Except for the 32nd and 33rd stories, there were generally no private offices, as an employee who desired such privacy could work from home instead. The penthouse at the 32nd and 33rd stories originally contained the corporate suites of McGraw-Hill Publishers. The McGraw-Hill corporate offices were relatively conservative in design, being designed in the Georgian and Colonial Revival styles. These stories also contained a cafeteria for McGraw-Hill executives and a 250-seat auditorium. Following a 2021 renovation, the upper floors are still arranged in an open plan. The ceilings had been modified so the structural-steel beams were exposed. In addition, the windows were replaced with units that could open and close, and some of the suites have terraces. Furthermore, there are several tenant lounges, conference areas, event spaces, and fitness center. The setbacks have nine landscaped terraces that collectively cover . As a result of the COVID-19 pandemic, the heating, ventilation, and air conditioning system was also completely replaced and air filters were installed. History Development The McGraw-Hill Publishing Company was formed in 1917 when James H. McGraw and John A. Hill merged their respective companies. It was then headquartered at the