Christenberry got his start in the hotel business as a deputy hotel commissioner of Florida. He then served as public relations director of the Hotel Winton in Cleveland from 1929 to 1931, sales and promotions director of the Book-Cadillac in Detroit from 1931 to 1932, manager of the Jefferson in Peoria from 1933 to 1934, and general manager of the Roosevelt in Pittsburgh from 1934 to 1935.[2] In 1935 he became the vice president and general manager of Hotel Astor in New York City.[3] In 1944 he was promoted to president and treasurer of the Astor.[4] In 1945 the Astor was purchased by Sheraton Hotels and Christenberry became the vice president and managing director of the Sheraton Astor. From 1955 to 1964 he was the president and chairman of the Ambassador Hotel.[2]
In 1951, Governor Thomas E. Dewey appointed Christenberry chairman of the New York State Athletic Commission. Dewey tasked Christenberry and his fellow commissioners with cleaning up the sport of boxing.[7] Christenberry overturned Carmen Basilio's May 29, 1952, victory over Charles Pierce Davey after finding discrepancies on the referee's scorecard. Following a December 19, 1952 Joey Giardello-Billy Graham at Madison Square Garden, Christenberry changed judge Joe Agnello's card from 6-4 Giardello to 5–5 with Graham ahead on points, 6–5, giving Graham the victory. This decision led to legal action which concluded on February 17, 1953, when Judge Bernard Botein upheld Christenberry's decision.[1] In 1955, Dewey's successor W. Averell Harriman replaced Christenberry as chairman, but Christenberry remained on the commission until March 12, 1956.[8][9]
Mayoral campaign
On June 27, 1957, the Republican leaders of New York's five boroughs announced that after a two-month search they had selected Christenberry to be the party's nominee for Mayor.[10] Throughout the campaign, Christenberry attacked Wagner on the issue of crime and claimed that the administration had "miserably failed" on that issue.[11] He centered his campaign around a plan to hire 5,000 new police officers, the reduction of graft and corruption in city government, and halting New York City's population loss.[12][13] President Eisenhower and Vice President Nixon appeared with and endorsed Christenberry.[14][15] He also received the endorsement of former Governor Dewey and was praised by Eleanor Roosevelt for his energy and knowledge of the issues.[16][17] Wagner, who was favored throughout the race, defeated Christenberry 69% to 27%.[18]
Postmaster of New York City
On June 3, 1958, Christenberry was sworn in as acting Postmaster of New York.[19] He was recommended for the position by Senator Jacob Javits after his original choice, Samuel Roman, declined the position.[20] On July 6, 1959, he was nominated by President Eisenhower for permanent status as postmaster.[21] He was confirmed by the United States Senate on September 15, 1959.[22] He resigned as Postmaster due to ill health effective June 17, 1966.[23]