Question: Which building was constructed first - 1095 Avenue of the Americas or One Vanderbilt Place?

Context articles: Verizon Communications
University of Sydney Quadrangle
James von Klemperer
1095 Avenue of the Americas
William H. Hume
Stapleton, Staten Island
John Hancock Center
Flatiron District
Duarte Square
One Vanderbilt

Verizon Communications (   ) ( ), otherwise known as Verizon, is an American multinational telecommunications conglomerate and a corporate component of the Dow Jones Industrial Average.
 The company is based at 1095 Avenue of the Americas in Midtown Manhattan, New York City, but is incorporated in Delaware.
The Quadrangle is a prominent sandstone building located within the University of Sydney Camperdown Campus.
 Taking over 100 years to complete, the Quadrangle was designed and developed by numerous contributors including Edmund Blacket, James Barnet, and Leslie Wilkinson.
 The original building included the Great Hall and was constructed between 1855 and 1862.
 Construction on the quadrangle began in 1854, it had four sides by 1926, and was completed in the 1960s after several stages of development.
 It comprises the Great Hall, MacLaurin Hall, Faculty of Arts office and the Nicholson Museum.
 MacLaurin Hall was constructed from 1902-1904 and was designed by Walter Liberty Vernon.
 The architectural style of the Quadrangle is gothic revival.
 The building is mostly constructed of Sydney sandstone and is unique in the Australian architectural landscape.
 At the time of its completion, the Quadrangle was ‘the largest public building in the colony.’
 The Traditional Indigenous owners of the land on which the Quadrangle was built are the Cadigal and Wangal tribes of the Eora people.
 The main entrance - constructed first along with the Great Hall - is underneath the clock tower, which holds one of only two carillons in Australia.
James von Klemperer is a New York-based American architect.
 He is president of the architectural firm of Kohn Pedersen Fox (KPF).
 He is known for his contributions to the designs of new cities, urban mixed-use clusters, and supertall buildings, including the One Vanderbilt tower currently under construction next to Grand Central Terminal in Manhattan.
 He established KPF's practice in Asia in the early 1990s.
 James von Klemperer led the design of the Lotte World Tower, currently the world's fifth tallest building.
1095 Avenue Of The Americas is a 630 ft (192m) tall skyscraper in New York City, New York.
 It was constructed from 1972 to 1974 as headquarters of New York Telephone and has 41 floors.
 The building also served as the headquarters of NYNEX and Bell Atlantic.
 Kahn & Jacobs designed the building, which is the 61st tallest in New York.
 The original facade was said to be designed to resemble the relays which were commonly found inside telephones of the time.
 From 2006 to 2007 the tower received a $260 million renovation which upgraded the office space from Class B+ to Class A office space.
 The phone company moved its headquarters to the Verizon Building in the early 2000s, and sold off most of the building, retaining a condominium interest in floors 6-12, where Verizon maintained offices and a telephone exchange serving landlines in Midtown Manhattan.
 However, in 2013 the company moved its corporate headquarters back to 1095 Avenue of the Americas, following a sale of the upper floors of the Verizon Building.
William H. Hume was an American architect in New York City.
 His work included the Hebrew Orphan Asylum of New York (1884) on Amsterdam Avenue (used as an Army Hall in 1943 and then by City College, the site is now the Jacob H. Schiff Playground), Langdon Building at 305 Broadway, Scotch Presbyterian Church on 96th Church and Central Park West (during the booming 1920s it was replaced by a "Skyscraper Church" designed by Rosario Candela, constructed in 1928–29 it included a 16-story apartment tower and a new church sanctuary and classroom space set into the base and fronting West 96th Street) New Netherland Hotel (1892), replaced by the Sherry Netherland Hotel in 1927, Mutual Reserve Building at 305 Broadway and an addition at 615–629 Avenue of the Americas (Sixth Avenue) between West 18th and 19th Streets in the Flatiron District of Manhattan, New York City.
 Originally the B. Altman Dry Goods Store, built 1876–77 (David & John Jardine), with addition on the south in 1887 by William H. Hume, and on West 18th Street by Buchman & Fox, 1909.
 B. Altman moved to Fifth Avenue and 34th Street in 1906.
 The current street retail occupant is The Container Store.
Stapleton is a neighborhood in northeastern Staten Island in New York City in the United States.
 It is located along the waterfront of Upper New York Bay, roughly bounded on the north by Tompkinsville at Grant Street, on the south by Clifton at Vanderbilt Avenue, and on the west by St. Paul's Avenue and Van Duzer Street, which form the border with the community of Grymes Hill.
 Stapleton is one of the older waterfront neighborhoods of the borough, built in the 1830s on land once owned by the Vanderbilt family.
 It was a long-time commercial center of the island, but has struggled to revive after several decades of neglect following the building in 1964 of the Verrazano-Narrows Bridge, which shifted the commercial development of the island to its interior.
The John Hancock Center is a 100-story, 1,128-foot (343.7 m) supertall skyscraper at 875 North Michigan Avenue, Chicago, Illinois, United States.
 It was constructed under the supervision of Skidmore, Owings and Merrill, with chief designer Bruce Graham and structural engineer Fazlur Khan.
 When the building topped out on May 6, 1968, it was the second tallest building in the world and the tallest outside of New York City.
 It is currently the fourth-tallest building in Chicago and the eighth-tallest in the United States, after One World Trade Center, the Willis Tower, 432 Park Avenue, the Trump Tower Chicago, the Empire State Building, the Bank of America Tower, and the Aon Center.
 When measured to the top of its antenna masts, it stands at 1500 ft .
 The building is home to offices and restaurants, as well as about 700 condominiums, and contains the third highest residence in the world, after the Burj Khalifa in Dubai and the Trump Tower in Chicago.
 The building was named for John Hancock Mutual Life Insurance Company, a developer and original tenant of the building.
The Flatiron District is a neighborhood in the New York City borough of Manhattan, named after the Flatiron Building at 23rd Street, Broadway and Fifth Avenue.
 Generally the Flatiron District is bounded by 20th Street, Union Square and Greenwich Village to the south; the Avenue of the Americas (Sixth Avenue) or Seventh Avenue and Chelsea to the west; 25th Street and NoMad to the north; Rose Hill to the northeast, and Lexington Avenue/Irving Place, Gramercy Park to the east.
In the late 17th century, the plot was a farm owned by Trinity Church.
 The square in its current form was officially dedicated in 1945 in concert with the renaming of Sixth Avenue to the Avenue of the Americas "in celebration of Pan-American unity".
 In 1975 benches, trees and sidewalks were added to the square.
 On May 26, 1977, control of the square was transferred from the New York State Department of Transportation to the New York City Department of Parks and Recreation.
 In 1978, the Consulate of the Dominican Republic dedicated a statue of Juan Pablo Duarte in the square.
 The dedication took place on the 165th birthday of Duarte, who was one of the founding fathers of the Dominican Republic.
 Italian sculptor Nicola Arrighini designed the thirteen-foot bronze figure, which today rests atop an eight-foot granite base.
 This statue is one of a group of six other monuments to Latin American leaders throughout the Avenue of the Americas.
One Vanderbilt (also One Vanderbilt Place) is a skyscraper under construction in New York City on the corner of 42nd Street and Vanderbilt Avenue in midtown Manhattan, New York City.
 Proposed by New York City mayor Bill de Blasio and developer SL Green Realty as part of a planned Midtown East rezoning, the tower will stand next to Grand Central Terminal.