The mule train comes into the Washington area against a late afternoon sky in June of 1968. The caravan left Marks, Miss., for the nation's capital on May 13 to participate in the Poor People's Campaign.
Coretta Scott King, center, accompanied by the Rev. Ralph Abernathy, her children, and singer Harry Belafonte, leads a march in Memphis to honor her husband who was assassinated four days earlier.
Olanda Smith (left) and Dinah McCaryer were the first to marry in Jefferson County on Monday, Feb. 9, 2015, after a federal judge overturned the state's ban on same-sex marriage. Several other counties refused to issue marriage licenses that day.
Ben Raines, an environmental reporter for AL.com, holds pieces of wood he collected from a cypress forest discovered in the depths of the Gulf of Mexico. A scientist says having an intact forest from the ice age is rare.