text: [{"text_idx": "#000004", "text": "Indiana-Illinois, New Harmony quadrangle : topography"}, {"text_idx": "#000005", "text": "Illinois-Indiana, Mount Carmel quadrangle : topography"}, {"text_idx": "#000006", "text": "Illinois, Mahomet quadrangle : topography"}, {"text_idx": "#000008", "text": "Estimated file size: 813 MB"}]