Who were the leaders of the Universal Negro Improvement Association, and what did the organization do? Learn more about the membership and the work of the U.N.I.A. in these photographs and advertisements.
The transcontinental railroad's construction touched the lives of hundreds of thousands of people. Some desired it, some built it, and some did everything in their power to stop it. Browse a photo gallery of settlers, Native Americans, and workers whose lives were affected by the railroad as it traversed the West.
Science and the military converged under a cloak of secrecy at Los Alamos National Laboratory. As part of the Manhattan Project, Los Alamos — both its very existence and the work that went on there — was kept from Americans during World War II.
In 1921, the American Relief Association sent food aid to Russia, where millions of citizens were suffering from a devastating famine. Browse this gallery of the human story — see the Russians who endured and the Americans tasked with delivering salvation.
Charles R. Knight (1874-1953) was one of the first American painters to depict dinosaurs, providing imaginative and largely scientifically based renditions of the extinct beasts in real-world settings.
