Information about A landmark in the mapping of Essex County, Massachusetts
John G[raves]. HALES, (mapmaker and publisher) / J[ohn Peter] v[an] N[ess] Throop (engraver), THE COUNTY OF ESSEX From ACTUAL Survey MADE BY JOHN G. HALES Engraved by J.V.N. Throop Boston June 19th 1825 [but 1826].