"Der nördliche Theil von America nach Cook, Hearne, Vancouver, und Mackenzie.", Library's copy stamped on backing: Yale University Library, Karpinski-Von Wieser Map Collection., and Relief shown by hachures.
Includes inset of Alaska., Library's copy stamped on verso: Yale University Library, Karpinski-Von Wieser Map Collection., and Relief shown by hachures.
"Ergänzt und nach den neuern Entdeckungen der Hrn. Lewis Clarke u: Pike vervollstandigt.", Includes inset of "Nordwestlichster Theil von Nord America.", Relief shown by hachures., and Yale's copy stamped on backing: Yale University Library, Karpinski-Von Wieser