Pennant had "intended to write a "Zoology of North America" but as he explained in the "Advertisement", since he felt mortified by the loss of British control over America, this was changed to Arctic Zoology.^[22] The book was published, with illustrations by Peter Brown, in 1785–1787. The first volume was on quadrupeds and the second on birds. Compilation of the latter was assisted by an expedition Sir Joseph Banks had made to Newfoundland in 1786. The work was translated into German and French, and part of it into Swedish. The volumes were much acclaimed and Pennant was elected a member of the American Philosophical Society. In 1787, a supplementary volume was published which included extra information on the reptiles and fishes of North America.^{[23] " (Wikipedia article on Thomas Pennant).} 

Pennant never visited the regions described, but relied on information derived from the accounts of explorers such as Captain Cook, Hearne, and communications with other learned zoologists, including Peter Simon Pallas, and on specimens supplied from various private collections, such as that of Andrew Graham of Hudson's Bay, Thomas Hutchins, Ashton Blackburn, Alexander Garden, and Benjamin Smith Barton.

Digital facsimile from Google Books at this link.