Mary Lincoln, 1861. Photograph by Matthew Brady (Library of Congress, Washington, DC)

The First Lady in white silk. Photograph by Matthew Brady, c. 1861 (Library of Congress, Washington, DC)

Lincoln Home Dining Room (image courtesy of the Lincoln Home National Historic Site, National Park Service, Springfield, Illinois)

Lincoln Home Sitting Room 1 (image courtesy of the Lincoln Home National Historic Site, National Park Service, Springfield, Illinois)

Lincoln Home Sitting Room 2 (image courtesy of the Lincoln Home National Historic Site, National Park Service, Springfield, Illinois)

The Lincoln Family. Print by Currier & Ives, 1867 (Alfred Whital Stern Collection, Library of Congress, Washington, DC)

Willie and Tad Lincoln with cousin Lockwood Todd, c. 1861. Photograph by Matthew Brady (Library of Congress, Washington, DC)

Mary Lincoln, c. 1846. Photograph by Nicholas H. Shepherd (Library of Congress, Washington, DC)

Abraham Lincoln, c. 1846. Photograph by Nicholas H. Shepherd (Library of Congress, Washington, DC)

Robert Lincoln, c. 1865 (Library of Congress, Washington, DC)

Lincoln and Tad, February 5, 1865 (Library of Congress, Washington, DC)

Lincoln's Deathbed, depicted in a print by H. H. Lloyd & Co., 1865. In this image, Mary's grief is accurately portrayed, but Tad Lincoln, depicted kneeling by his the bed, was not present for his father's death. (Library of Congress, Washington, DC)

Pau, France, c. 1890, where Mary Lincoln lived from 1876-1880.