James Halfpenny

Scats and Tracks of the Great Lakes: A Field Guide to the Signs of 70 Wildlife Species, 2nd Edition - James Halfpenny

Scats and Tracks of the Southeast: A Field Guide to the Signs of 70 Wildlife Species, Second Edition - James Halfpenny

Scats and Tracks of Alaska Including the Yukon and British Columbia: A Field Guide to the Signs of Sixty-Nine Wildlife Species - James Halfpenny

Scats and Tracks of the Pacific Coast: A Field Guide to the Signs of 70 Wildlife Species, Second Edition - James Halfpenny

Scats and Tracks of the Desert Southwest: A Field Guide to the Signs of 70 Wildlife Species, Second Edition - James Halfpenny

Scats and Tracks of the Rocky Mountains: A Field Guide to the Signs of 70 Wildlife Species - James Halfpenny

Scats and Tracks of North America - James Halfpenny

Scats and Tracks of the Northeast: A Field Guide to the Signs of 70 Wildlife Species - James Halfpenny