- Weeds, Control Without PoisonsCharles Walters
- Minerals for the Genetic CodeCharles Walters
- Eco-farmCharles Walters, C. J. Fenzau
- Eco-Farm, An Acres U.S.A. PrimerCharles Walters
- Fertility from the Ocean DeepCharles Walters
- A Farmer's Guide to the Bottom LineCharles Walters
- Grass, the Forgiveness of NatureCharles Walters