US Congressman, Entrepreneur. He was a United States Representative from the State of Illinois. He was born of Polish ancestry one of five children as John Carl Kluckzynski to Thomas E. Kluczynski (1872-1956), and his wife Mary Zurawski Kluczynski (1873-1961), in Chicago, Illinois, on February 15, 1896. He was educated locally and attended the local common public schools and parochial schools. Following his education, he served his country overseas in the United States Army with the rank of Corporal with the Eighth Field Artillery during World War I, from 1918 to 1919. Following his military service, he returned home to the United States and worked in the catering business in his native Chicago, Illinois, beginning in 1920. He then became interested in politics and was elected and served as a Member of the Illinois State House of Representatives representing the 4th District from 1933 to 1948. He was also elected in 1948 and served a term as a Member of the Illinois State Senate representing the 4th District in 1949. He then decided to run for a seat in the United States Congress and was elected to succeed the late United States Representative Martin Gorski (1886-1949), on January 3, 1951. The United States Representative Martin Gorki's seat remained vacant from his death on December 4, 1949, to January 3, 1951. A Member of the Democratic Party, he then served Illinois's 5th District (the Eighty-Second Congress, the Eighty-Third Congress, the Eighty-Forth Congress, the Eighty-Fifth Congress, the Eighty-Sixth Congress, the Eighty-Seventh Congress, the Eighty-Eighth Congress, the Eighty-Ninth Congress, the Ninetieth Congress, the Ninety-First Congress, the Ninety-Second Congress, the Ninety-Third Congress, and the Ninety-Forth Congress), in the United States House of Representatives from January 3, 1951, until his death in office on January 26, 1975, at the age of 78. While serving in the United States Congress, he voted in favor of the Civil Rights Act of 1957, and he served as Chairman of the Public Works Subcommittee on Transportation. He also served as Chairman of the Select Committee that ran the United States House of Representatives restaurants. In total, he was elected to represent the Eighty-Second Congress in 1950 and reelected to the twelve succeeding Congresses, including being reelected in 1952, reelected in 1954, reelected in 1956, reelected in 1958, reelected in 1960, reelected in 1962, reelected in 1964, reelected in 1966, reelected in 1968, reelected in 1970, reelected in 1972, reelected in 1974, and died while still serving in office on January 26, 1975, at the age of 78. Following his death while still serving in the United States Congress, his seat to represent the Ninety-Forth Congress remained vacant from January 26, 1975, to July 8, 1975. He was eventually succeeded in office by the incoming United States Representative John G. Fary (1911-1984), on July 8, 1975. During his lifetime, he was also active in the life of his community as a member of the Polish National Alliance, the Polish Roman Catholic Union of America, and was also a member of the American Legion, Forty and Eight, Veterans of Foreign Wars, and the Elks. He passed away from a heart attack in Chicago, Illinois, on January 26, 1975, at the age of 78. Following his death, his funeral services were held at the St. Pancratius Catholic Church in Chicago, Illinois, and through the Fortuna Funeral Home in Chicago, Illinois, and he was buried in a mausoleum in Resurrection Catholic Cemetery and Mausoleums in Justice, Illinois. He was married to Estelle Stanislava Polowy Kluczynski (1913-1999). His wife Estelle survived him passing away on June 1, 1999, at the age of 80, and she is also buried in a mausoleum in Resurrection Catholic Cemetery and Mausoleums in Justice, Illinois. The couple had no children together. His brother Thomas E. Kluczynski (1903-1994), became a successful lawyer, and served as a Circuit Judge in Illinois from 1950 to 1963, as a Judge of the Illinois Appellate Court from 1963 to 1966, and as a Justice of the Illinois State Supreme Court from 1966 to 1976. The office building at the Chicago Federal Center in Chicago, Illinois, known as the Kluczynski Federal Building, was named in United States Representative John Carl Kluczynski's honor after his death in 1975.