Nice example of Tanner's map of the New England states, which first appeared in his American Atlas in 1823 (and prior to that in serial format, in 1819).
The present example is a scarce separately published pocket version of the map.
Tanner is one of the most important names in American Cartographic History. As a publisher, he produced seminal works such as Mills Atlas of South Carolina, many of the important large format wall and case maps by Melish, Austin and others and as an engraver. Perhaps his most important work is his American Atlas, which represented a breakthrough in quality, both in engraving and production, as well as the first elephant folio format atlas utilizing indigenous cartography to be published in the US. The atlas was published by Tanner and his son Thomas R. Tanner, for over 20 years. The American Atlas maps were also issued over the next 20+ years in pocket map format, of which this is perhaps the most attractive.
Later examples of the map are particularly scarce.