In a photo taken during Bulgaria's communist period, a brightly colored parade passes through Ninth of September Square. Named in honor of the day the Soviets took over the German-occupied country in 1944, the square has since been renamed Alexander Battenberg Square after Bulgaria's first modern prince who reigned from 1879 through 1886.

(Photograph shot on assignment for, but not published in, "The Bulgarians," July 1980, National Geographic magazine)