Gedung MetLife
Catatan kaki

↑  MetLife Building di SkyscraperPage
↑  MetLife Building di Emporis
↑  Horsley, Carter C. The MetLife Building Diarsipkan 2021-02-28 di Wayback Machine., The Midtown Book. Accessed September 30, 2007. "When it was completed, the 2.400.000 sq ft (220.000 m2). building became the world's largest office building in bulk, a title it would lose a few years later to 55 Water Street downtown."
↑  Schneider, Daniel B. "F.Y.I." Diarsipkan 2023-07-29 di Wayback Machine., The New York Times, January 5, 1997. Accessed September 30, 2007. "Q. I recall that it was 1963 when the huge Pan Am letters were put atop what is now the Met Life building and that it was 1992 when they were taken down.... A. Most of the letters and the accompanying logos did not survive removal; exceptions are in warehouses.... The letters, each about 15 kaki (4,6 m) tall, and the logos -- 25-kaki (7,6 m)-wide globes -- had to be cut into sections and pulled up onto the roof by technicians from Universal Unlimited, who built and installed their replacements, the Met Life signs."
↑  Dunlap, David W. "Final Pan Am Departure Diarsipkan 2023-04-05 di Wayback Machine.." The New York Times. Friday September 4, 1992. Retrieved on August 25, 2009.
↑  Ramirez, Anthony. "MetLife Sells 2nd Building, A Landmark On Park Ave. Diarsipkan 2017-12-01 di Wayback Machine." The New York Times. April 2, 2005. Retrieved on August 25, 2009.
↑  Schneider, Daniel B. "F.Y.I." Diarsipkan 2023-07-29 di Wayback Machine., July 25, 1999. Accessed September 30, 2007. "Q. Back in the 1960s and 1970s, helicopters bound for Kennedy International Airport used to take off from a deck atop the old Pan Am Building. Why was the service halted? A. As many as 360 helicopter flights a day were planned by New York Airways after the 59-story Pan Am building was completed in 1963, but a bitter public outcry delayed the first few flights until Dec. 21, 1965.... The operation proved unprofitable, however, since the helicopters carried an average of only eight passengers, and the heliport, which had cost $1 million to build, closed in 1968.... After another round of hearings -- and renewed protests -- flights resumed in February 1977. Three months later, the landing gear on one of the Sikorsky S-61 helicopters collapsed while passengers were boarding, flipping it on its side and sending a 20-foot rotor blade skidding across the roof and over the west parapet wall. Within hours, the heliport was closed indefinitely."
↑  Hudson, Edward. "Helicopter Service From Roof Of Pan Am Building Suspended; PAN AM SUSPENDS COPTER SERVICES" Diarsipkan 2013-05-12 di Wayback Machine., The New York Times, February 19, 1968. Accessed September 30, 2007. "Helicopter operations from the 59-story roof of the Pan Am Building were suspended last night as a result of a dispute over the future financial support of the operation by Pan American World Airways."
↑  NTSB. Aircraft Accident Report - New York Airways, Inc., Sikorsky S-61L, N619PA Pan Am Building Heliport, New York, New York, May 16, 1977 Diarsipkan 2019-11-08 di Wayback Machine.. (PDF Diarsipkan 2007-09-30 di Wayback Machine.)
↑  UPI. Helicopter Crash Kills Five. Beaver County (Pa.) Times: Tuesday, 17 May 1977, A-13.
↑  AP. Five Dead in Helicopter Crash. The Fort Scott Tribune: Tuesday, 17 May 1977, page 1.