Ключевые слова: 19th century, closeups, delight, determination, development, economic change, emanating, expressions, factories, happy workers, historic, historic moments, historical, historical workers, illuminate, industrial age, industrial change, industrial era, industrial history, industrial progress, industrial revolution, industrial society, industrial workforce, industrialization, industry, joyful faces, labor, labor movement, laborers, manufacturing, navigating, optimism, portrait, positive outlook, progress, progression, radiant faces, revolutionary changes, spirit, transformation, urbanization, victorian workforce, vintage, vintage photographs, workers, workers rights, workforce,