Dating Pueblo Bonito and Other Ruins of the Southwest

Maps of the District of Columbia and City of Washington, and ...

Climatic Cycles and Tree-growth: A study of cycles

The Journal of Andrew Ellicott: Late Commissioner on Behalf ...

The Climatic Factor as Illustrated in Arid America

The Journal of Andrew Ellicott: Late Commissioner on Behalf ...

Climatic Cycles and Tree-growth: A Study of the Annual Rings ...

Tree Rings and Chronology

The Annual Rings of Trees

Precision of Ring Dating in Tree-ring Chronologies