In this photograph, taken March 6, 1975 by Bruce Dale, President Gerald R. Ford meets with United States Senators and advisors to discuss aid to Cambodia. Senator Hubert H. Humphrey of Minnesota; Senator Clifford P. Case of New Jersey; Senator John Sparkman of Alabama; John Ortho Marsh, Jr., counselor to the president; Max Friedersdorf, White House assistant for Congressional Relations; Lt. Gen. Brent Snowcroft, deputy assistant to the president for National Security Affairs; and William T. Kendall, deputy assistant for Legislative Affairs. Earlier, Humphrey had served as Vice President of the United States under President Lyndon B. Johnson.

This White House photograph of President John F. Kennedy meeting with Ambassador Thomas J. Kiernan of Ireland was taken by Cecil Stoughton on March 17, 1961 in the Oval Office. Ambassador Kiernan presented President Kennedy with an arrangement of shamrocks and a scroll displaying the Kennedy family coat of arms and signed by the chief herald of Ireland, Gerard Slevin.

In this photograph taken by Cecil Stoughton, Ambassador William P. Fay of Ireland presents President Lyndon B. Johnson with an engraved Waterford Crystal bowl filled with shamrocks on March 17, 1965 in the Oval Office. The gift was from the President Eamon de Valera of Ireland on St. Patrick's Day.

This photograph of President John F. Kennedy meeting with Ambassador Thomas J. Kiernan of Ireland was taken by Abbie Rowe on March 17, 1961 in the Oval Office. Ambassador Kiernan is captured presenting President Kennedy with a scroll displaying the Kennedy family coat of arms and signed by the chief herald of Ireland, Gerard Slevin. Kiernan also gave Kennedy an arrangement of shamrocks.

In this photograph, captured from left to right are Irish Minister of Foreign Affairs Garret FitzGerald, President Gerald R. Ford, Taoiseach Liam Cosgrave of Ireland, and Secretary of State Henry Kissinger talking near the fireplace in the Oval Office. David Hume Kennerly took this photo on March 17, 1976, during a State Visit by the taoiseach, or prime minister, and his wife, Vera Cosgrave.

In this photograph, taken March 6, 1975 by Bruce Dale, members of the press vie to ask questions at a press conference held by President Gerald R. Ford. It was the tenth such conference that President Ford hosted since ascending to the presidency. The conference was held in room 450 of the Old Executive Office Building, a massive office complex used to conduct Executive Office business just west of the White House. The building was renamed the Dwight D. Eisenhower Executive Office Building by President Bill Clinton in 1999 and formally rededicated by President George W. Bush in 2002.

In this photograph, taken March 6, 1975 by Bruce Dale, actor Robert Redford meets with President Gerald R. Ford and his daughter, Susan, in the Oval Office. Redford starred in popular films including "Butch Cassidy and the Sundance Kid" (1969), "The Sting" (1973), and "All the President's Men" (1976). Press secretary Ron Nessen joined the meeting, while chief official White House photographer David Hume Kennerly documented the event.

In this photograph, taken March 6, 1975 by Bruce Dale, President Gerald R. Ford meets with a group of United States Senators and advisors to discuss aid to Cambodia. Present at the meeting were Senator Hubert H. Humphrey of Minnesota; Senator Clifford P. Case of New Jersey; Senator John Sparkman of Alabama; John Ortho Marsh, Jr., counselor to the president; Max Friedersdorf, White House assistant for Congressional Relations; Lt. Gen. Brent Snowcroft, deputy assistant to the president for National Security Affairs; and William T. Kendall, deputy assistant for Legislative Affairs. Earlier, Humphrey had served as Vice President of the United States under President Lyndon B. Johnson. In this photograph, chief official White House photographer David Hume Kennerly can be seen snapping photographs in the background.

In this photograph, taken March 6, 1975 by Bruce Dale, President Gerald R. Ford meets with a group of United States Senators and advisors to discuss aid to Cambodia. Present at the meeting were Senator Hubert H. Humphrey of Minnesota; Senator Clifford P. Case of New Jersey; Senator John Sparkman of Alabama; John Ortho Marsh, Jr., counselor to the president; Max Friedersdorf, White House assistant for Congressional Relations; Lt. Gen. Brent Snowcroft, deputy assistant to the president for National Security Affairs; and William T. Kendall, deputy assistant for Legislative Affairs. Earlier, Humphrey had served as Vice President of the United States under President Lyndon B. Johnson. In this photograph, chief official White House photographer David Hume Kennerly snaps photographs from behind those seated for the meeting.

In this photograph, taken on March 6, 1975, President Gerald R. Ford holds a meeting in the Oval Office with Vice President Nelson A. Rockefeller, cabinet members, and advisors. Joining Ford and Rockefeller at the meeting were James T. Lynn, director of the Office of Management and Budget; Secretary of Agriculture Earl L. Butz; Secretary of Health, Education, and Welfare Caspar W. Weinberger; James M. Cannon III, executive director of the Domestic Council; and deputy assistant Richard B. Cheney. Cheney would go on to serve as Vice President of the United States during the George W. Bush administration.

This photograph of the 2022 Official White House Christmas tree arriving at the White House was taken by Matthew D'Agostino on November 21, 2022. Two Clydesdale horses, Ben and Winston, pulled the carriage carrying the tree up the North Drive where First Lady Dr. Jill Biden welcomed the 18.5-foot Concolor Fir from Auburn, Pennsylvania alongside her grandson, Beau Biden, Jr. The tree was presented by Paul and Pam Shealer, the 2022 National Christmas Tree Association's (NCTA) champion growers, and cultivated at the Shealers' Evergreen Acres Tree Farm in Schuylkill County, Pennsylvania. The tree was carefully delivered to the Blue Room, where it remained on display for the holiday season. Since 1966, the Christmas tree displayed in the Blue Room has been presented to the White House following a contest run by the National Christmas Tree Association.

This photograph of the 2022 Official White House Christmas tree arriving at the White House was taken by Matthew D'Agostino on November 21, 2022. Two Clydesdale horses, Ben and Winston, pulled the carriage carrying the tree up the North Drive where First Lady Dr. Jill Biden welcomed the 18.5-foot Concolor Fir from Auburn, Pennsylvania alongside her grandson, Beau Biden, Jr. The tree was presented by Paul and Pam Shealer, the 2022 National Christmas Tree Association's (NCTA) champion growers, and cultivated at the Shealers' Evergreen Acres Tree Farm in Schuylkill County, Pennsylvania. The tree was carefully delivered to the Blue Room, where it remained on display for the holiday season. Since 1966, the Christmas tree displayed in the Blue Room has been presented to the White House following a contest run by the National Christmas Tree Association.

This photograph of the 2022 Official White House Christmas tree arriving at the White House was taken by Matthew D'Agostino on November 21, 2022. Two Clydesdale horses, Ben and Winston, pulled the carriage carrying the tree up the North Drive where First Lady Dr. Jill Biden welcomed the 18.5-foot Concolor Fir from Auburn, Pennsylvania alongside her grandson, Beau Biden, Jr. The tree was presented by Paul and Pam Shealer, the 2022 National Christmas Tree Association's (NCTA) champion growers, and cultivated at the Shealers' Evergreen Acres Tree Farm in Schuylkill County, Pennsylvania. The tree was carefully delivered to the Blue Room, where it remained on display for the holiday season. Since 1966, the Christmas tree displayed in the Blue Room has been presented to the White House following a contest run by the National Christmas Tree Association.

This photograph of the 2022 Official White House Christmas tree arriving at the White House was taken by Matthew D'Agostino on November 21, 2022. Two Clydesdale horses, Ben and Winston, pulled the carriage carrying the tree up the North Drive where First Lady Dr. Jill Biden welcomed the 18.5-foot Concolor Fir from Auburn, Pennsylvania alongside her grandson, Beau Biden, Jr. The tree was presented by Paul and Pam Shealer, the 2022 National Christmas Tree Association's (NCTA) champion growers, and cultivated at the Shealers' Evergreen Acres Tree Farm in Schuylkill County, Pennsylvania. The tree was carefully delivered to the Blue Room, where it remained on display for the holiday season. Since 1966, the Christmas tree displayed in the Blue Room has been presented to the White House following a contest run by the National Christmas Tree Association.

This photograph of the 2022 Official White House Christmas tree arriving at the White House was taken by Matthew D'Agostino on November 21, 2022. Two Clydesdale horses, Ben and Winston, pulled the carriage carrying the tree up the North Drive where First Lady Dr. Jill Biden welcomed the 18.5-foot Concolor Fir from Auburn, Pennsylvania alongside her grandson, Beau Biden, Jr. The tree was presented by Paul and Pam Shealer, the 2022 National Christmas Tree Association's (NCTA) champion growers, and cultivated at the Shealers' Evergreen Acres Tree Farm in Schuylkill County, Pennsylvania. The tree was carefully delivered to the Blue Room, where it remained on display for the holiday season. Since 1966, the Christmas tree displayed in the Blue Room has been presented to the White House following a contest run by the National Christmas Tree Association.

In this photograph by Oliver F. Atkins, President Richard M. Nixon and American musician Elvis Presley pose for a photo in the Oval Office on December 21, 1970. Out of concern for the country, Presley wrote President Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

This photograph of President Richard M. Nixon meeting with American musician Elvis Presley, Delbert "Sonny" West, and Jerry Schilling was taken by Oliver F. Atkins during the president's Oval Office "Open Hour" on December 21, 1970. Out of concern for the country, Presley wrote President Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

In this photograph taken by Oliver F. Atkins, President Richard M. Nixon admires a gift given to him by American musician Elvis Presley. Presley gave the gift -- a signed photograph of the Presley family -- to President Nixon during a visit to the Oval Office on December 21, 1970. Also visible is Elvis Presley's collection of law enforcement badges, seen in a small pile on the edge of the Resolute Desk. Out of concern for the country, Presley wrote Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

This photograph of President Richard M. Nixon meeting with American musician Elvis Presley in the Oval Office was taken by Oliver F. Atkins on December 21, 1970. White House staff member Egil Krogh is seen looking on at right. Out of concern for the country, Presley wrote President Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

This photograph of President Richard M. Nixon meeting with American musician Elvis Presley, Delbert "Sonny" West, and Jerry Schilling was taken by Oliver F. Atkins during the president's Oval Office "Open Hour" on December 21, 1970. Out of concern for the country, Presley wrote President Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

This photograph of President Richard M. Nixon meeting with American musician Elvis Presley in the Oval Office was taken by Oliver F. Atkins on December 21, 1970. President Nixon can be seen admiring Presley's cufflinks while White House staff member Egil Krogh is seen looking on at right. Out of concern for the country, Presley wrote President Nixon a letter suggesting he be appointed a Federal Agent at Large and requested a meeting. Nixon agreed to meet Presley and, during the visit, gave him a federal narcotics badge. In turn, Presley gifted the president a pistol and some family photos for hosting the meeting.

In this photograph by Pete Souza, President Barack Obama meets with representatives from FIFA (Federal Internationale de Football Association) on July 27, 2009 in the Oval Office. President of FIFA, Joseph S. "Sepp" Blatter, is seated to President Obama's left and presented Obama with jerseys for his two daughters, Malia and Sasha. Obama welcomed Blatter to the White House to discuss the the United States' bid to host the FIFA Men's World Cup in 2018 or 2022, which would ultimately go to Russia and Qatar.

In this photograph by Oliver F. Atkins, President Richard M. Nixon speaks to Apollo 11 astronauts Neil Armstrong and Edwin "Buzz" Aldrin. The phone call was live on national television as the two astronauts were on the moon and President was in the Oval Office. The phone call was called "the longest-distance phone call ever".

In this photograph, taken by Yoichi R. Okamoto on March 27, 1968, President Lyndon B. Johnson pins a saucer magnolia flower to the lapel of figure skating champion Peggy Fleming in the Oval Office. Johnson plucked the blossom for Fleming from a saucer magnolia tree in the Rose Garden. The 19-year-old figure skater earned a gold medal in the ladies' singles competition at the 1968 Winter Olympic Games in Grenoble, France. President Johnson invited Fleming and her mother Doris to the Oval Office, where he presented the Olympic champion with a gold bangle and pinned the magnolia blossom to her lapel. Later in her career, Fleming headed a figure skating group that performed for President Jimmy Carter during a Christmas party for White House staff on December 22, 1980.

This photograph, taken by Paul Morse, shows President George W. Bush delivering an address to the nation from the Oval Office following the terrorist attacks on September 11, 2001. Bush delivered the live televised address that evening. Contributors to the speech included President Bush; speechwriters John McConnell, David Frum, Matthew Scully, and Michael J. Gerson; national security advisor Condoleezza Rice and her deputy assistant Stephen J. Hadley; and members of the White House communications team. In his remarks, Bush mourned the loss of American citizens yet asserted the strength of the nation, promised retribution for the perpetrators of the attacks and their supporters, and offered words of prayer.