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Fine large format map of the world, which provides fantastic detail throughout, engraved by John Dower and published by Henry Teesdale.

Perhaps the most interesting part of the map is its treatment of the search for the Northwest Passage and the extensive annotations showing the routes of various discoverers throughout the world. With respect to the Northwest Passage, there are dozens of annotations identifying the British and other discoveries in the region, with section of text describing Arctic exploration up to 1833 and then additional notes on the map discussing discoveries up to October 1839, noting:

"This Coast was Explored by Messrs. Dease and Simpson under the Honble. Hudson's Bay Company which completes the North West Passage Octr. 1839"

Off the coast of Alaska, a number of different tracks of exploration are shown, up to Captain Beechey in 1826, with a further note in the interior further discussing P.W. Deawe and Thos. Simpson's expedition beginning at Fort Chipewyan June 1, 1837, traveling north to the Arctic Sea and then to Alaska.

In the Southern Hemisphere, there are a number of early antarctic discoveries shown.

Texas is shown as a Republic.

The map is in fantastic condition, with extraordinarily fresh bright colors. 

Condition Description
Dissected and laid on 2 sheets of linen. Folded into original red morocco gilt stamped case.
Henry Teesdale Biography

Teesdale was a London-based map publisher. He was an early Fellow of the Royal Geographical Society, elected in 1830. Teesdale partnered with John Hordan and William Colling Hodson, but this arrangement dissolved in 1832. Afterward, he continued to work on his own and periodically with colleagues like John Crane Dower, Christopher Greenwood, Josiah Henshall and others. He published a variety of atlases and separately-issued maps. His business was quite successful, as he registered as a partner in the Royal Bank of Scotland in 1845.