Abraham Lincoln’s home in Springfield, Ill., draped in black-and-white mourning cloth, following his assassination. ¶ African American mothers holding their babies, likely the first generation born into freedom. ¶ A battlefield in the Virginia wilderness a year after the war, with trees stripped of bark by musket fire. ¶ Snapshots from the era of the Civil War, they are among hundreds of rare images gathered over four decades by an 87-year-old Texas grandmother.