From MapHist.com - Dictionary of Mapmakers

T
THOMSON, John
By Pierre Joppen
Sep 7, 2006, 03:56

John Thomson produced two major works in his life time, A New General atlas of the World 1814-28 and Atlas of Scotland 1820-32. The maps from A New General atlas of the World were printed in full hand coloring from large copperplate engravings. The level of detail at the time of publication was heralded as a breakthrough in British cartography and Thomson rightly earned a great deal of attention and his work copied for a number of years

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