Antique, highly detailed, uncoloured map of North America on a folded sheet engraved by Sidney Hall c1827 to 1830, but possibly published later in an unknown atlas or book, up to 1846 when territory affiliation and boundaries changed. David Rumsey has 1829 similar as page XXIII, but there are many from Black's Atlas up to 1845 with a higher plate number. This is XXII and likely an early publication.

This map may be one of the earliest maps to accurately depict the North West Passage from Baffin Bay to the Arctic Ocean. The passage wasn't officially discovered for another 15 years or so. The map includes Texas and New California as part of Mexico, a huge Western Territory (Oregon) along with British America, subtitled Canada, under British control, Florida named separately, Alaska as Russian Territory and other features of the time. Canada and the region west of the Great Lakes provide remarkable detail of the various rivers. The Mackenzie River extends from Gt Slave Lake to the Arctic Ocean.

Sidney Hall engraved for most of the major publishers of the time including Aaron Arrowsmith and John Thomson and was either the first, or one of the first, to use steel engraving for accuracy and longevity of the plates. This is likely one of the first steel engraved maps. Hall died young in 1931 after only 15 years in the trade. His wife Selena continued his work signing herself S. Hall until Edward Weller her son-in-law took over the business and continued it in his own name.

374x262 on paper 394x272mm. It is missing the margin from the right border, is lightly foxed, mostly in the marine areas, and has a prior hinging tape repair at the back to the fold line, 2 small repaired tears at the top, not entering the border, one on the right into the margin and some creasing to the top right. Overall it's in reasonable condition for the age, but still interesting.