John Hayward, Gazetteer of the United States of America.... (Philadelphia: James L. Gihon, 1854), 531-532.
Portland, Me. City, seaport, and seat of justice of Cumberland co. 65 miles S. W. from Augusta, the capital of the state, 105 miles N. N. E. from Boston, and 290 miles S. E. from Montreal, by railroad. Population in 1790, 2240; 1800, 3704; 1810, 7169; 1820, 8521; 1830,12,601; 1840, 15,218; 1850, 20,879.