In this photograph by Jack Kightlinger, First Lady Pat Nixon celebrates her birthday on board Air Force One on March 16, 1974 en route to South America. Also on board were staff members, including Col. Jack Brennan. Born Thelma Catherine Ryan, Mrs. Nixon was nicknamed "St. Patrick's Day Babe" by her father due to being born the day before St. Patrick's Day. The shortened version, Pat, stuck with Mrs. Nixon the rest of her life.

This photograph of First Lady Pat Nixon was taken on February 22, 1972, during President Richard M. Nixon's historic visit to the People's Republic of China. Mrs. Nixon is captured speaking to American reporter Barbara Walters outside the Peking Hotel. President Nixon's trip was the first time an American president had taken part in a State Visit to China.

In this photograph taken by Robert L. Knudsen on June 12, 1971, Tricia Nixon holds hands with her father, President Richard M. Nixon, on the steps of the North Portico following her wedding reception at the White House. Her husband, Edward Cox, her mother, First Lady Pat Nixon, and her sister Julie Nixon Eisenhower are also pictured next to her. The group is surrounded by guests and members of the press. This was the 16th documented wedding to take place at the White House and the first to be held in the Rose Garden. Nixon was the daughter of President Richard M. Nixon and First Lady Pat Nixon. Approximately 400 guests watched the nuptials in the Rose Garden.

In this photograph, Tricia Nixon unwraps presents during a bridal shower that was held in her honor by Second Lady Judy Agnew on June 1, 1971. Seated near Tricia Nixon are, from left to right: her sister Julie Nixon Eisenhower (on floor), former First Lady Mamie Eisenhower, and First Lady Pat Nixon, Tricia's mother. Tricia Nixon married Edward Cox, a law student at the time, in a Rose Garden ceremony on June 12, 1971.

This photograph is of President Richard M. Nixon, First Lady Pat Nixon, their eldest daughter Tricia Nixon, her fiancé Edward Cox, and his parents Howard Ellis Cox and Anne Crane Delafield (Finch) Cox on a stage in the East Room of the White House. The couples' engagement was announced at the Irish Evening in honor of Taoiseach of Ireland John Lynch and Mrs. Nixon's 59th Birthday. Jack E. Kightlinger photographed the announcement in the East Room of the White House on March 16, 1971.

This photograph showing guests toasting Tricia Nixon and Edward Cox at their wedding rehearsal dinner was taken on June 11, 1971 by Jack E. Kightlinger. The rehearsal dinner took place at Blair House. Blair House is located across Pennsylvania Avenue from the White House and is known as the President's Guest House. Visiting diplomats and dignitaries stay at Blair House while on official visits to the White House, and it is where the president-elect and first family reside prior to taking the oath of office.

In this photograph taken by Oliver F. Atkins, Tricia Nixon shows off her engagement ring to Máirín Lynch, wife of the Taoiseach of Ireland John Lynch, during the Irish Evening reception in the Blue Room of the White House on March 16, 1972. Next to them are First Lady Pat Nixon, Tricia's fiancé Edward Cox, and President Richard M. Nixon. The reception was held in honor of the Taoiseach and Mrs. Nixon's 59th birthday.

This photograph of President Richard M. Nixon, First Lady Pat Nixon, their daughter Tricia Nixon, and her fiancé Edward Cox on a stage in the East Room of the White House. The couples' engagement was announced at the Irish Evening in honor of Taioseach of Ireland John Lynch and his wife Máirín Lynch. Oliver F. Atkins photographed the announcement in the East Room of the White House on March 16, 1971.

In this photograph, Tricia Nixon unwraps presents during a bridal shower that was held in her honor by Second Lady Judy Agnew on June 1, 1971. Seated near Tricia Nixon (in white at right) are, from left to right: her sister Julie Nixon Eisenhower (on floor), former First Lady Mamie Eisenhower, and First Lady Pat Nixon, Tricia's mother. Tricia Nixon married Edward Cox, a law student at the time, in a Rose Garden ceremony on June 12, 1971.

In this photograph taken on May 26, 1971, by Robert L. Knudsen, Tricia Nixon opens gifts at a bridal shower in her honor, hosted by the women of the press. Sitting on the couch with Tricia are, from left to right: reporter Helen Thomas, Tricia's mother, First Lady Pat Nixon, and her future mother-in-law Anne Crane Delafield (Finch) Cox. Julie Nixon Eisenhower, Tricia Nixon's younger sister sits on the floor. The bridal shower was held at Decatur House. Completed in 1818, Decatur House was the third building on Lafayette Square and its first private residence. It was designed by Benjamin Henry Latrobe, the architect of the Capitol, and several other famous buildings, for Commodore Stephen Decatur (1779-1820) and his wife, Susan Wheeler Decatur. Tragically, on March 22, 1820, Stephen Decatur was mortally wounded during a duel. After his death, his widow Susan Decatur rented out the house to foreign ministers and several secretaries of state. The house was eventually sold and passed through several hands, including the Gadsby family, the U.S. Subsistence Bureau, and the Beale family. Marie Ogle Beale, a society maven, and the last owner, left the house to National Trust for Historic Preservation in 1961. In 2010, the White House Historical Association and National Trust entered into a co-stewardship arrangement of Decatur House.

In this photograph taken on June 11, 1971 by Karl Schumacher, President Richard M. Nixon and First Lady Pat Nixon talk with members of the Army Strings in the Rose Garden of the White House. The President and Mrs. Nixon greeted the group at the wedding rehearsal for their eldest daughter, Tricia Nixon, and her fiancé, Edward Cox. In the background, Tricia and Edward are captured talking to a woman, possibly Julie Nixon Eisenhower. The wedding took place the next day, on June 12, and was the 16th wedding to take place at the White House.

This image is a composite of various first ladies in inaugural ball gowns and mannequins with dresses and gowns specially made for them by women designers, seamstresses, and courtiers. This image was featured in the digital exhibition "Glamour and Innovation: Women Behind the Seams of White House Fashion." *** This image contains images that requires licensing and may only be used for press and publicity purposes related to exhibit. All other uses must be approved by the White House Historical Association and cleared by the copyright holder.***

This image is a composite of various first ladies in inaugural ball gowns and mannequins with dresses and gowns specially made for them by women designers, seamstresses, and courtiers. This image was featured in the digital exhibition "Glamour and Innovation: Women Behind the Seams of White House Fashion." *** This image contains images that requires licensing and may only be used for press and publicity purposes related to exhibit. All other uses must be approved by the White House Historical Association and cleared by the copyright holder.***

This photograph of First Lady Pat Nixon was taken on December 11, 1972. Mrs. Nixon is seen standing in the Cross Hall among holiday decorations, including a poinsettia tree, floral designs draped around the chandelier, and red cloth covered columns. The Cross Hall, which is located on the State Floor of the White House, runs the length of the Executive Mansion and offers views of the East, Red, Green, and Blue Rooms.

In this photograph, First Lady Pat Nixon gives a tour of holiday decorations to the White House Press Corps in the State Dining Room. On display nearby is a German A-frame gingerbread house, designed by assistant executive chef Hans Raffert. Raffert created his first A-frame gingerbread house for First Lady Pat Nixon in 1969, where they soon evolved into a beloved holiday tradition.

In this photograph taken by Bryon E. Schumaker, First Lady Pat Nixon, Chinese interpreters, officials, and the press watch a panda inside an enclosure at the Beijing Zoo (also known as the Peking Zoo) on February 22, 1972. The trip to the zoo was part of the Nixons' State Visit to the People's Republic of China.

In this photograph taken by Bryon E. Schumaker, First Lady Pat Nixon, Chinese interpreters, officials, and the press watch a panda inside an enclosure at the Beijing Zoo (also known as the Peking Zoo) on February 22, 1972. The trip to the zoo was part of the Nixons' State Visit to the People's Republic of China.

In this photograph taken by Bryon E. Schumaker, First Lady Pat Nixon, Chinese interpreters, officials, and the press watch a panda inside an enclosure at the Beijing Zoo (also known as the Peking Zoo) on February 22, 1972. The trip to the zoo was part of the Nixons' State Visit to the People's Republic of China.

In this photograph, taken by Jack E. Kightlinger on December 12, 1971, First Lady Pat Nixon and her eldest daughter, Julie Nixon Eisenhower, examine Christmas decorations in the Entrance Hall.

In this photograph, taken by National Geographic photographer Joseph J. Scherschel on December 21, 1969, President Richard M. Nixon, First Lady Pat Nixon, astronauts from the Apollo 12 lunar exploration mission, and their wives greet members of the Boys Choir of the Washington National Cathedral in the Cross Hall. The choristers performed that day at a worship service in the East Room. The crew of Apollo 12 included the second group of astronauts to walk on the moon, on November 19-20, 1969. Cdr. Pete Conrad, his wife, Jane; lunar module pilot Alan Bean, his wife, Sue; and command module pilot Richard F. Gordon, Jr. and his wife, Barbara were the overnight guests of president and Mrs. Nixon at the White House on December 20-21-1969.

In this photograph, taken by National Geographic photographer Joseph J. Scherschel, President Richard M. Nixon, First Lady Pat Nixon, astronauts from the Apollo 12 lunar exploration mission, and their wives converse in the Cross Hall. The crew of Apollo 12 included the second group of astronauts to walk on the moon, on November 19-20, 1969. Cdr. Pete Conrad, his wife, Jane; lunar module pilot Alan Bean, his wife, Sue; and command module pilot Richard F. Gordon, Jr. and his wife, Barbara were the overnight guests of President and Mrs. Nixon at the White House on December 20-21, 1969. In this photograph, the Nixons, the astronauts, and their spouses wait to receive visitors for a worship service in the East Room, which was attended by 325 guests on on December 21, 1969.

In this photograph, taken by National Geographic photographer Joseph J. Scherschel on December 14, 1969, President Richard M. Nixon and First Lady Pat Nixon welcome guests in the Cross Hall to a performance of George Frideric Handel's "Messiah" by the New York Avenue Presbyterian Church choir. Attended primarily by members of Congress and their families, the half-hour performance was held that Sunday in lieu of the weekly worship services held in the East Room during the Nixon administration.

In this photograph, taken by Karl Schumacher on April 18, 1971, President Richard M. Nixon and First Lady Pat Nixon pose with world heavyweight boxing champion and 1964 Olympic gold medalist Joe Frazier and his family in the State Dining Room. The president and first lady invited the Frazier family to attend a worship service at the White House administered by the Rev. Carl W. Haley of the Virginia Conference of the Methodist Episcopal Church, South. Haley was a former housemate of Nixon's while they were both enrolled at the Duke University School of Law. Raised in a devout Quaker household, President Nixon regularly hosted worship services on Sunday mornings in the East Room.

In this photograph, taken by Andrew Grove on August 17, 1972, First Lady Pat Nixon and her daughter Julie Nixon Eisenhower receive members of the United States Olympic Team in the State Dining Room prior to their departure for the 1972 Summer Games in Munich, West Germany. Among the attendees at the reception were members of the 1972 men's Olympic basketball team. Undefeated since the sport became part of the Olympic competition in 1936, the American team suffered a devastating defeat to the Soviet Union during the men's basketball final on September 9, 1972. The 1972 Summer Olympics also became infamous for a terrorist attack on September 5, 1972, which resulted in the deaths of two Israeli athletes and nine others held hostage by the Palestinian militant group the Black September Organization.

In this photograph, President Richard M. Nixon and First Lady Pat Nixon meet with Queen Elizabeth II and Prime Minister Edward Heath of Great Britain. The Nixons met Queen Elizabeth Prime Minister Heath at Chequers, the Buckinghamshire country residence for the sitting prime minister. The visit followed a June 1970 visit to the White House by Prince Charles and Princess Anne.