Thomas Say

Account of an Expedition from Pittsburgh to the Rocky Mountains; Volume 1

James's Account

The Complete Writings of Thomas Say On the Entomology of North America; Volume 2

Conchology [A Facsimile of an 1819 Article in the Third American Edition of Nicholson's British Encyclopedia or Dictionary of Arts & Sciences]

James's Account

James's Account

American Conchology; Or, Description of the Shells of North America

Account Of An Expedition From Pittsburgh To The Rocky Mountains; Volume 3

Account of an Expedition from Pittsburgh to the Rocky Mountains

American Conchology; or, Descriptions of the Shells of North America

Descriptions of Some New Terrestrial and Fluviatile Shells of North America, 1829, 1830 1831

James's Account

James's Account

A description of the insects of North America

The Complete Writings of Thomas Say on the Entomology of North America Set by Thomas Say (1978, Hardcover, Reprint)

James's Account of S. H. Long's Expedition

James's Account of S.H. Long's Expedition, 1819-1820

Account of an Expedition from Pittsburgh to the Rocky Mountains ... ; Volume II

American Entomology, or Descriptions of the Insects of North America

James's Account

James's Account

The Complete Writings of Thomas Say On the Entomology of North America; Volume 1

American entomology