Updated from M. Carey's 1818 edition General Atlas. Many changes from the 1818 edition: new towns and many new roads. Robert DeSilver's name with the date of 1827 is printed below the map. DeSilver did an Atlas in 1822 using the Carey maps (William Mayer has the only copy we have ever seen; it is not mentioned anywhere else), which he acquired, we presume, from Carey when Carey retired in 1822 (Ristow). The six maps listed here we acquired together (Penn, Ohio, Maryland, Conn, Georgia, and Virginia); an additional map of Massachusetts is the same vintage, but folded into pocket map covers; we acquired it separately. All seven maps have the same water mark, the same outline color by county, and all were clearly issued as separates; only Pennsylvania and Virginia have the DeSilver imprint; and only these two and Georgia have substantial updates from the earlier Carey imprints. Perhaps in 1827 he decided to reissue his 1822 Carey maps as Pocket Maps and separate maps. Relief shown by hachures. Prime meridians: London and Philadelphia.
note
Updated from M. Carey's 1818 edition General Atlas. Many changes from the 1818 edition: new towns and many new roads. Robert DeSilver's name with the date of 1827 is printed below the map. DeSilver did an Atlas in 1822 using the Carey maps (William Mayer has the only copy we have ever seen; it is not mentioned anywhere else), which he acquired, we presume, from Carey when Carey retired in 1822 (Ristow). The six maps listed here we acquired together (Penn, Ohio, Maryland, Conn, Georgia, and Virginia); an additional map of Massachusetts is the same vintage, but folded into pocket map covers; we acquired it separately. All seven maps have the same water mark, the same outline color by county, and all were clearly issued as separates; only Pennsylvania and Virginia have the DeSilver imprint; and only these two and Georgia have substantial updates from the earlier Carey imprints. Perhaps in 1827 he decided to reissue his 1822 Carey maps as Pocket Maps and separate maps. Relief shown by hachures. Prime meridians: London and Philadelphia.
Note
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