Ian Sheldon

1971

• Animal Tracks of New Jersey
• Animal tracks of the Rockies
• Bugs of Alberta
• Seashore of Southern California (Lone Pine Field Guide)
• Animal Tracks of Alaska
• Animal Tracks of Alberta
• Animal Tracks of Atlantic Canada
• Animal Tracks of British Columbia
• Animal Tracks of Florida, Georgia & Alabama (Animal Tracks Guides)
• Animal Tracks of Kentucky and Tennessee
• Animal Tracks of Manitoba
• Animal Tracks of Maryland, Delaware and Virginia