For six months in 1974, two young photographers, fresh out of art school in Chicago, traveled through Cajun country, documenting the people, festivals, material culture, and haunting landscapes of Acadiana and its coastal outposts. Never before published or exhibited as a group, the 163 black-and-white images in Cajun Document illuminate south-central Louisiana as it stood poised on the verge of enormous change. Coastal erosion, a boom in...