"The United States of America", Cummings & Hilliard

This early, uncolored geological map was included in Parker Cleaveland's first edition An Elementary Treatise on Mineralogy and Geology. The map covers the eastern United States, extending past the Mississippi River to include Louisiana and New Iberia. A large Illinois encompasses present-day Wisconsin, and Florida is divided into East and West. The map contains no key to the geological classifications but are clearly indicated by thin, wavy engraved lines that are most prominent in the southern Appalachians (the classifications are described in Cleaveland's report - not included).

This map is not listed in Marcou, but it appears to be very similar to William Maclure's first geological map published in 1809. Cleaveland's second edition map (1822) is listed as Marcou #28 and states that the map is a reissue of Maclure's 1817 map "with very few additions or variations." Only 1,000 copies of the first edition of Cleaveland’s book were printed and were quickly exhausted, necessitating a second edition.

References: cf. Marcou & Marcou #28.

Condition: B

A nice dark impression with a light dampstain occupying the lower third of the image.