The ice age in North America and its Bearing Upon the Antiquity of man. 5th ed. With Many new Maps and Illus., enl. and Rewritten to Incorporate the Facts That Bring it up to Date, With Chapters on Lake Agassiz and the Probable Cause of Glaciation

Minnesota in Three Centuries, 1655-1908; Volume 1

The ice age in North America and its Bearing Upon the Antiquity of man. 5th ed. With Many new Maps and Illus., enl. and Rewritten to Incorporate the Facts That Bring it up to Date, With Chapters on Lake Agassiz and the Probable Cause of Glaciation

Minnesota in Three Centuries, 1655-1908; Volume 1

History of Mining and Quarrying in Minnesota

History of Mining and Quarrying in Minnesota

The Upper Beaches and Deltas of the Glacial Lake Agassiz

The Ice Age in North America and Its Bearings Upon the Antiquity of Man

The Ice Age in North America and Its Bearings Upon the Antiquity of Man

Catalogue of the Flora of Minnesota, Including Its Phaenogamous and Vascular Cryptogamous Plants, Indigenous, Naturalized, and Adventive