Ключевые слова: barge, canal locks, coal, color photography, dam, engineering and technology, environmentalism, federal agency, government agency, industry, kentucky, kentucky dam, lake, landforms, livingston county, material, new deal agencies, north america, river, science, technology, tennessee, tennessee river, tennessee valley authority, tn, transport, transportation, transporting, tugboats, tva, united states, united states of america, us, usa, water, watercraft,