A Field Guide to Mammal Tracking in North America

1986

Scats and Tracks of North America

A Field Guide to the Signs of Nearly 150 Wildlife Species

2008

Scats and Tracks of the Desert Southwest

2000

Scats and Tracks of the Northeast

2001

Scats and Tracks of the Rocky Mountains

1998

Winter

An Ecological Handbook

1989

Yellowstone Wolves in the Wild

2003