Question: Owen Robertson Cheatham founded the company traded on the stock exchange nicknamed what from 1949 to 2005?
Context: The Pittsburgh Stock Exchange was a large regional stock market located in Pittsburgh, Pennsylvania from November 11, 1864 (originally as Thurston's Oil Exchange) until closing on August 23, 1974.  It was alternatively named the Pittsburgh Coal Exchange starting on May 27, 1870, and the Pittsburgh Oil Exchange on July 21, 1878 with 180 members.  On July 25, 1896 the Exchange formally took the name Pittsburgh Stock Exchange though it had been referred to by that name since the spring of 1894.  The Exchange, like many modern day exchanges, was forced to close during sharp economic crashes or crises.  On December 24, 1969 The Philadelphia-Baltimore-Washington Stock Exchange bought the Pittsburgh Stock Exchange.  At its height the exchange traded over 1,200 companies, but by the last trading day in 1974 only Pittsburgh Brewing Company, Williams & Company and Westinghouse remained listed. Owen Robertson Cheatham (1902-1970) was an American businessman.  He founded Georgia-Pacific, a formerly publicly traded corporation on the New York Stock Exchange from 1949 to 2005, now a subsidiary of Koch Industries. The San Francisco Stock and Bond Exchange was a regional stock exchange based in San Francisco, California, United States.  Founded in 1882, in 1928 the exchange purchased and began using the name San Francisco Stock Exchange, while the old San Francisco Stock Exchange was renamed the San Francisco Mining Exchange.  The San Francisco Curb Exchange was absorbed by the San Francisco Stock Exchange in 1938.  In 1956 the San Francisco Stock Exchange merged with the Los Angeles Oil Exchange to create the Pacific Coast Stock Exchange. The Karachi Stock Exchange Limited (KSE), was a stock exchange located at the Stock Exchange Building (SEB) on Stock Exchange Road, in the heart of Karachi's Business District, I. I. Chundrigar Road, Karachi, Sindh Province of Pakistan.  It is now incorporated in the Pakistan Stock Exchange along with the other two bourses of Pakistan, the Lahore Stock Exchange and the Islamabad Stock Exchange It is Pakistan's largest and one of the oldest stock exchange in South Asia by market capitalization, with many Pakistani consortium as well as overseas enterprises listings. Craig Lawrence Dobbin, {'1': ", '2': ", '3': ", '4': "} (September 12, 1935 – October 7, 2006) was an industrialist and Chairman and Chief Executive Officer of CHC Helicopter Corporation, a public company traded on the Toronto Stock Exchange and the New York Stock Exchange.  The company, headquartered in Richmond, BC, is the world's largest helicopter company, providing global helicopter services. Philadelphia Stock Exchange (PHLX), now known as NASDAQ OMX PHLX, is the oldest stock exchange in the United States.  It is now owned by The NASDAQ OMX Group.  Founded in 1790, the exchange was originally named the Board of Brokers of Philadelphia, also referred to as the Philadelphia Board of Brokers.  In 1875, the Board of Brokers changed its name to the Philadelphia Stock Exchange.  The exchange merged with the Baltimore Stock Exchange in 1949 and was named the Philadelphia-Baltimore Stock Exchange.  It merged with the Washington Stock Exchange in 1954, becoming known as the Philadelphia-Baltimore-Washington Stock Exchange (often abbreviated as PBW).  In 1969, the exchange acquired the Pittsburgh Stock Exchange.  In 2007, PHLX was purchased by NASDAQ for $652 million. The New York Stock Exchange (abbreviated as NYSE and nicknamed "The Big Board"), is an American stock exchange located at 11 Wall Street, Lower Manhattan, New York City, New York.  It is by far the world's largest stock exchange by market capitalization of its listed companies at US$21.3 trillion as of June 2017.  The average daily trading value was approximately 169 billion in 2013.  The NYSE trading floor is located at 11 Wall Street and is composed of 21 rooms used for the facilitation of trading.  A fifth trading room, located at 30 Broad Street, was closed in February 2007.  The main building and the 11 Wall Street building were designated National Historic Landmarks in 1978. NagaCorp Ltd. (Chinese Name: 金界控股有限公司)is the largest hotel, gaming and leisure operator in Cambodia and has been listed on The Stock Exchange of Hong Kong Limited since 2006.  NagaCorp (Stock Code: 3918) is the first company with operations in Cambodia to become a public listed entity and it is the first gaming-related company traded on The Stock Exchange of Hong Kong Limited.  NagaCorp holds a 70-year casino licence in Cambodia which runs until 2065, and has a monopoly within a 200km radius (except the Cambodia-Vietnam border area, Bokor, Kirirom Mountains and Sihanoukville) of Phnom Penh until 2035.  Its property, NagaWorld is Phnom Penh's only integrated hotel-casino entertainment complex. The Baltimore Stock Exchange was a regional stock exchange based in Baltimore, Maryland.  Opened prior to 1881, The exchange's building was destroyed by the Great Baltimore Fire of 1904, and was then located at 210 East Redwood Street in Baltimore's old financial district.  In 1918, the exchange had 87 members, with six or seven members at the time serving the United States in World War I.  The Baltimore Stock Exchange was acquired the Philadelphia Stock Exchange in 1949, becoming the Philadelphia-Baltimore Stock Exchange.  The Baltimore Stock Exchange Building was sold and renamed the Totman Building. The New Securities Stock Exchange or NEX Stock Exchange (NEX) was a stock exchange located in Podgorica, Montenegro.  The NEX Stock Exchange was founded 2001.  It was one of two principal stock exchanges in Montenegro, the other being the Montenegro Stock Exchange, also in Podgorica.  In January 2010, stockholders in NEX approved a merger with the Montenegro Stock Exchange, initially expected to take place within two to three months.  However, the two were technically merged as of 31 December 2010, with their systems jointly operating since 10 January 2011.  Thus, NEX Stock Exchange ceased to exist as a legal subject.  The merger consolidated and simplified securities trading in Montenegro.
Answer: The Big Board