National Research Council (US). Committee on Latin American Anthropology, Alexander Lesser. Survey of Research on Latin America by United States Scientists and Institutions. National Academies, 1946. p. 70Archived October 22, 2022, at the Wayback Machine. "Pan American World Airways System, 135 East 42nd Street, New York 17, N.Y."
"Order 99-8-15"(PDF). United States Department of Transportation. August 19, 1999. Archived from the original(PDF) on December 10, 2015. Retrieved July 27, 2015.
Horsley, Carter C. (2007). "The MetLife Building". The Midtown Book. Retrieved April 7, 2008. 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."
"Mid-Air Transfer". TIME Magazine. September 7, 1981. Archived from the original on June 20, 2007. Retrieved June 1, 2009.
Ludtke, Melissa; Curry, Tom; Schoenthal, Rhea (November 20, 1989). "Keeping Lockerbie Alive". Time Europe. Archived from the original on March 7, 2008. Retrieved June 29, 2009.
Ludtke, Melissa; Curry, Tom; Schoenthal, Rhea (November 20, 1989). "Keeping Lockerbie Alive". Time Europe. Archived from the original on March 7, 2008. Retrieved June 29, 2009.
"Order 99-8-15"(PDF). United States Department of Transportation. August 19, 1999. Archived from the original(PDF) on December 10, 2015. Retrieved July 27, 2015.
National Research Council (US). Committee on Latin American Anthropology, Alexander Lesser. Survey of Research on Latin America by United States Scientists and Institutions. National Academies, 1946. p. 70Archived October 22, 2022, at the Wayback Machine. "Pan American World Airways System, 135 East 42nd Street, New York 17, N.Y."