On the plains and among the peaks - How Mrs. Maxwell made her natural history collection is an un...

Forty Years a Fur Trader on the Upper Missouri - The Personal Narrative of Charles Larpenteur, 18...

Forty Years a Fur Trader on the Upper Missouri - Personal Narrative is an unchanged, high-quality...

The Expeditions of Zebulon Montgomery Pike - During the Years 1805-7. Vol 1 is an unchanged, high...

The Expeditions of Zebulon Montgomery Pike - During the Years 1805-7. Vol. II is an unchanged, hi...

Key to North American Birds - Containing a concise account of every species of living and fossil ...

Fur-bearing animals - A monograph of North American Mustelidae is an unchanged, high-quality repr...

Exploration of the Colorado River of the West and its Tributaries - Explored in 1869, 1870, 1871 ...

Key to North American Birds - Containing a concise account of every species of living and fossil ...

Audubon and his Journals - Volume 2 is an unchanged, high-quality reprint of the original edition...

A check list of North American birds is an unchanged, high-quality reprint of the original editio...

The Daemon of Darwin is an unchanged, high-quality reprint of the original editionof 1885.Hanse...