Aaron Henry, the leader of the Mississippi Freedom Democratic Party delegation, greets delegates at they get off a bus. Caption on photo reads: (AC5) ATLANTIC CITY, N.J., Aug. 21 -- MISSISSIPPI 'FREEDOM' GROUP ARRIVES -- Aaron Henry, right, head of the new "Freedom Democratic Party," greets members of the delegation who arrived in Atlantic City today hoping to be seated at the Democratic national convention in place of the regular Mississippi delegation. The delegation, consisting of 64 Negroes and four whites, arrived after a 24-hour bus trip.The Atlanta University Center Robert W. Woodruff Library acknowledges the generous support of the Joseph & Evelyn Lowery Institute for Justice and Human Rights, the Joseph Echols Lowery Irrevocable Tr...