- American Gymnosperms: A Reference Guide
- Edible Wild Plants and Fruits of the Upper Midwest: Over 200 species described & illustrated - the most practical manual for foragers
Booklets / Pamphlets:
- Field Notes: Common Trees of Minnesota
- Field Notes: Wild Edible and Toxic Plants and Mushrooms
Articles
- Wild Fruits (and Nuts) That Survive Our Midwest Winters (The Minnesota Conservation Volunteer, January–February 2017, Minnesota Department of Natural Resources.