of several on 42nd Street after a planned rezoning of the street that never happened. Frank Gale of McGraw-Hill wrote in January 1932, three months after the building's completion, that only six of the 33 usable office stories had not been occupied by then. With the onset of the Great Depression, the industrial equipment on the lower floors became obsolete and was sold in January 1931. In addition to McGraw-Hill's headquarters, space was rented to tenants such as the J. C. Valentine Company; the Topics Publishing Company; Charles Eneu Johnson, a printer-ink supplier; Media Records, an advertising-statistics company; the International Development Corporation; the Edge Moor Iron Company; United Cigar Stores; the Home Owners' Loan Corporation; and the Adolphe Hurst Company, an importing concern. By 1935, the building was almost fully occupied. Subsequent tenants included pulp publisher Martin Goodman, who founded Timely Comics (Marvel Comics’ common name during the Golden Age) at the building during 1939, as well as soap firm Givaudan. McGraw-Hill suffered from financial issues of its own, occupying only 34 percent of the floor area by 1939. During World War II, the McGraw-Hill Building's owners devised emergency blackout procedures in case of an air raid warning, because of the building's large number of windows relative to other structures in the area. The western part of McGraw-Hill's lot, which had not been developed for the McGraw-Hill Building, was proposed as the site of an interstate bus terminal in 1940, due to the building's proximity to the Lincoln Tunnel entrance to New Jersey. The terminal was approved in early 1941, but plans for the terminal were delayed by the war, and the terminal ultimately was instead built one block south in 1950. The adjacent lot ultimately was developed as a post office. In the mid-1950s, the Port Authority of New York and New Jersey started training "spotters" to look at traffic on the Lincoln Tunnel approaches from the 35th floor of the McGraw-Hill Building. The spotters used two-way radios to direct traffic, as well as a CCTV camera mounted on the top of the building. The McGraw-Hill Companies moved some of its publications to 1301 Avenue of the Americas in 1964 due to a lack of space at 330 West 42nd Street. At that time, the company occupied 94 percent of the space at 330 West 42nd Street and was planning to expand the structure. The company also took space