George and Martha Washington: 1-foot-2-inches (36 cm)
John and Abigail Adams: 1 inch (2 cm)
Thomas and Martha Jefferson: 1-foot-2.5-inches (37 cm)
Jefferson was a widower when his presidency began, and his daughter, Martha, acted as first lady, along with wives of the Cabinet secretaries.
James and Dolley Madison: 3 inches (7 cm)
next slide will load in 15 secondsSkip AdSkip AdJames and Elizabeth Monroe: 1 foot (31 cm)
John Quincy and Louisa Adams: 1.5 inches (3 cm)
Andrew and Rachel Jackson: 1-foot-1-inch (33 cm)
Rachel Jackson died just months before her husband's inauguration. Her niece Emily Donelson and his daughter-in-law Sarah Yorke Jackson acted as first lady in her absence.
Martin and Hannah Van Buren: Unknown
William Henry and Anna Harrison: Unknown
next slide will load in 15 secondsSkip AdSkip AdJohn and Julia Tyler: 9 inches (23 cm); John and Letitia Tyler: Unknown
Tyler's first wife, Letitia, died from a stroke while in the White House. He married his second wife, Julia, while still serving as president.
James K. and Sarah Polk: 6 inches (16 cm)
Zachary and Margaret Taylor: Unknown
Millard and Abigail Filmore: 3 inches (7 cm)
Franklin and Jane Pierce: 5 inches (13 cm)
next slide will load in 15 secondsSkip AdSkip AdJames Buchanan and Harriet Lane: 5 inches (13 cm)
Buchanan was a lifelong bachelor. His niece, Harriet Lane, acted as first lady during his term.
Abraham and Mary Lincoln: 1-foot-2-inches (36 cm)
Andrew and Eliza Johnson: 1-foot-1-inch (33 cm)
Ulysses S. and Julia Grant: Unknown
Rutherford B. and Lucy Hayes: 4.5 inches (11 cm)
next slide will load in 15 secondsSkip AdSkip AdJames A. and Lucretia Garfield: 9 inches (23 cm)
Chester A. and Ellen Arthur: Unknown
Chester A. Arthur was a widower when he became president after Garfield was shot, and his sister, Mary Arthur McElroy, served as first lady in his wife's place.
Grover and Frances Cleveland: 4 inches (10 cm)
Grover Cleveland served as the 22nd and 24th president of the United States. Cleveland's two terms were split apart by the presidency of Benjamin Harrison.
He married Frances during his first term, and she took over the duties of White House hostess from his sister, Rose Cleveland.
Benjamin and Caroline Harrison: 5 inches (13 cm)
William and Ida McKinley: Unknown
next slide will load in 15 secondsSkip AdSkip AdTheodore and Edith Roosevelt: 3 inches (8 cm)
William Howard and Helen Taft: 7.5 inches (19 cm)
Woodrow and Edith Wilson: 2 inches (5 cm); Woodrow and Ellen Wilson: 8 inches (20 cm)
Wilson's first wife, Ellen, died from an illness during her husband's presidency. He then remarried in 1915 to his second wife, Edith.
Warren G. and Florence Harding: 5 inches (13 cm)
Calvin and Grace Coolidge: 6 inches (15 cm)
next slide will load in 15 secondsSkip AdSkip AdHerbert and Lou Hoover: 3.5 inches (9 cm)
Franklin D. and Eleanor Roosevelt: 3 inches (8 cm)
Harry S. and Bess Truman: 5 inches (12 cm)
Dwight D. and Mamie Eisenhower: 9.5 inches (24 cm)
John F. and Jackie Kennedy: 5 inches (12 cm)
next slide will load in 15 secondsSkip AdSkip AdLyndon B. and Lady Bird Johnson: 9.5 inches (24 cm)
Richard and Pat Nixon: 5.5 inches (14 cm)
Gerald and Betty Ford: 9 inches (23 cm)
Jimmy and Rosalynn Carter: 4.5 inches (12 cm)
Ronald and Nancy Reagan: 9 inches (22 cm)
next slide will load in 15 secondsSkip AdSkip AdGeorge H.W. and Barbara Bush: 11 inches (28 cm)
Bill and Hillary Clinton: 8 inches (20 cm)
George W. and Laura Bush: 5.5 inches (14 cm)
Barack and Michelle Obama: 2 inches (5 cm)
Donald and Melania Trump: 3 inches (8 cm)