Official Portrait of President George W Bush

Official White House Portrait of Gerald Rudolph Ford - 38th President of the United States

Ford, Carter,Reagan, Bush Sr. & Bush Jr. at Pres. Nixon's funeral President

Former President Harry S Truman with President John F. Kennedy at the White House.

President Ronald Reagan (1911-2004), 40th President of the United States (1981-1989) and First Lady Nancy Reagan (1921-). They were married March 4, 1952.

The White House: Presidents: Bush, Sr. - Obama - Bush, Jr. - Clinton - Carter

Abraham Lincoln, 16th President.

Former U.S. President Jimmy Carter and daughter Amy in front of White House

President George W. Bush, center, poses with President-elect Barack Obama, and former presidents, George H.W. Bush, left, Bill Clinton and Jimmy Carter, right, Wednesday, Jan. 7, 2009, in the Oval Office of the White House in Washington. (Photo credit AP Photo/J. Scott Applewhite)

Official White House Portrait of Benjamin Harrison - 23rd President of the United States

Bush, George; Bush, Barbara President from 1989-1993

President George W. Bush and President George Bush 41st and 43rd President of the United States

Before he announced to the nation that Osama bin Laden had been killed in a strategic raid by American Special Forces, President Obama personally briefed his predecessors, George W. Bush, who launched the War on Terror during his tenure in office, and President Bill Clinton.

President Reagan and Vice President Bush 40th #President of the United States with soon to be 41st President of USA

Official White House portrait of Gerald Ford, the 38th President of the United States, 1974-1977. He also served as vice-president after Spiro Agnew resigned, under Richard Nixon, 1973-1974. Ford became president after Nixon’s resignation.

President Barack Obama laughs with former Presidents Jimmy Carter, Bill Clinton, and George W. Bush, prior to the dedication of the George W. Bush Presidential Library and Museum on the campus of Southern Methodist University in Dallas, Texas, April 25, 2013. (Official White House Photo by Pete Souza)

President Bush and President Bush

Official White House portrait photo of 41st President George H.W. Bush, taken in the Oval Office of the White House, Washington, D.C. Bush served as president 1989-1993.

Photo of George H.W. Bush