How did the food taste? These faces say it all. Photograph from the main eastern theater of war, Meade in Virginia, August-November 1863. Timothy H. O'Sullivan/Library of Congress hide caption

itoggle caption Timothy H. O'Sullivan/Library of Congress

Activists in the town of Saraqib, Syria, hold a poster that reads, "Sheikh Moaz al Khatib represents me." Courtesy of Mahmoud Bakkour hide caption

itoggle caption Courtesy of Mahmoud Bakkour

Rosa, Charley and Rebecca are three of eight freed slaves who sat for portraits in 1863-1864 that were sold to raise money to fund schools for emancipated slaves in Louisiana. The three were chosen because it was believed their near-white complexions would draw more sympathy — and support — from a country torn apart by slavery and civil war. Charles Paxson/Library of Congress hide caption

itoggle caption Charles Paxson/Library of Congress