The Underground Water of the Arkansas Valley in Eastern Colorado is a comprehensive study of the ...

The Colorado Plateau Region - Considered as a Field for Geological Study is an unchanged, high-qu...

The History of the Niagara River is an unchanged, high-quality reprint of the original edition of...

This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may conta...

Reprint of the original, first published in 1882.

Reprint of the original, first published in 1882.

Reprint of the original, first published in 1877.

Reprint of the original, first published in 1877.

Report on the Geology of the Henry Mountains

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...

This work has been selected by scholars as being culturally important, and is part of the knowled...