Geological Map of North America by A.K. Johnston, 1852

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Geological Map of North America by A.K. Johnston – Mountains and Valleys 1852 This finely detailed and beautifully shaded antique … Read more Geological Map of North America by A.K. Johnston – Mountains and Valleys 1852 This finely detailed and beautifully shaded antique map titled "The Mountains, Table Lands, Plains & Valleys of North America" was created by the noted Scottish geographer Alexander Keith Johnston and published in 1852 by William Blackwood & Sons in Edinburgh and London. It was issued as Plate 8 in Johnston’s groundbreaking *Physical Atlas of Natural Phenomena*, one of the earliest and most influential works of thematic cartography in the 19th century. The map presents the topographic structure of the North American continent, emphasizing physical geography over political borders. Using a delicate yet effective palette of hand-applied color, it distinguishes between mountainous regions, plateaus, plains, and river valleys. Green areas denote lowlands and river basins, while tan and brown areas indicate elevated terrain, such as mountain ranges and high plateaus. Key geographical features are precisely labeled, including the Rocky Mountains, Appalachian Mountains, Sierra Nevada, Great Basin, Canadian Shield, and Mississippi River Valley. The map covers all of North America, including Canada, the United States, Mexico, Central America, the Caribbean, and Greenland, as well as the Arctic archipelagos. Major tablelands such as those of Mexico and the Colorado Plateau are also clearly outlined, demonstrating the complexity of North America's geological structure. What sets this map apart is its educational clarity and scientific intent. Johnston’s work was intended to inform and enlighten readers about the structure of the natural world, making this a valuable piece not just for collectors of antique maps but also for educators, environmental historians, and interior designers seeking historically meaningful artwork. Alexander Keith Johnston (1804–1871) was a pioneering figure in British cartography. As Geographer in Ordinary to Queen Victoria for Scotland, he advanced the visual communication of scientific data through maps. His *Physical Atlas* remains a landmark publication in the history of science and cartography. Condition and framing tips: Very good condition with light age toning, original centerfold, and faint foxing at edges. Printed area clean and well-preserved. Frame in dark wood or black with a soft ivory or sage green mat to enhance the earthy palette and highlight the map's elegant detailing. Perfect for libraries, offices, or natural history-themed interiors. See less