An attractive map of the Americas, which also includes a good bit of western Europe and Africa. A Northwest Passage is shown through North America, beginning at the Great Lakes and ending in a large river emptying into the Pacific at about 50 deg. N. latitude. The entire western part of North America is virtually blank. The northwest coastline is delineated by a dotted line terminating with a notation concerning the Russian explorations in 1743 in the region of Alaska. Simple title cartouche and nice compass rose. This map was published in both atlas format and folded into a small format history book. This is the more desirable atlas issue with a single centerfold and wide margins.