Then-U.S. ambassador to Iraq Christopher Hill (right) tours the Mosul Museum of History in May 2009. This week the self-declared Islamic State posted a video online that showed militants going through the museum, pushing over statues and smashing artifacts with sledgehammers. Mujahed Mohammed/AFP/Getty Images hide caption
Park Ranger Mike Evans at the Castillo de San Marcos says the Spanish were roping cattle and pruning their citrus groves in St. Augustine before the British even set sail for Jamestown. Peter Haden/NPR hide caption
Students Patrick Rohrer, Sarah Warthen, Alix Piven and Lauren Urane are led by Mercyhurst University Archeologist Andy Hemmings. Their project has picked up where Florida's State Geologist Elias Sellards left off in 1915. Sellards led an excavation of the site where workers digging a drainage canal found fossilized human remains. Greg Allen/NPR hide caption
Whitney Plantation owner John Cummings has commissioned stark artwork for the site, including realistic statues of slave children found throughout the museum. Debbie Elliott/NPR hide caption
Construction workers at the Erbil Citadel, which was named a UNESCO World Heritage Site last year. Ari Shapiro/NPR hide caption
Abolitionist Harriet Tubman, circa 1860-1875 H.B. Lindsley/Library of Congress hide caption
Rabbi Max Nussbaum (left) and Dr. Martin Luther King Jr. in Los Angeles. Temple Israel of Hollywood hide caption
Miller Farm, the terminus of Van Syckel's pipeline, in 1868. The oil was pumped to Miller Farm and then transported by railroad. Drake Well Museum/Courtesy of PHMC hide caption
Lear Green escaping in her wooden chest. Illustration from The Underground Railroad: A Record of Facts, Authentic Narratives, Letters, Etc. by William Still, 1872. New York Public Library Digital Collections hide caption
Malcolm X addresses a rally in Harlem in New York City on June 29, 1963. AP hide caption
Models present the traditional costume known as hanbok during the 2010 Korea Hanbok Festival in Seoul. Ahn Young-joon/AP hide caption
Dr. Pauli Murray was an unheralded pioneer who argued civil rights cases challenging discrimination based on race and gender. AP hide caption
From Clayton, N.C., circa 1936-1937. H. Lee Waters/Duke University Libraries hide caption
(Left) Sauerkraut and sausage (foreground) cook on the stove at the Hutte Restaurant. (Right) Diners Roxanne Singhisen and Nick Lockyer of Pittsburgh chat at the Hutte. Pat Jarrett for NPR hide caption