http://www.rmhiherbal.org/aa/g-favoritwebs.html
https://nccih.nih.gov/health/providers/digest/herb-drug
https://learningherbs.com/free-herbal-remedies/
https://blog.mountainroseherbs.com/guide-tinctures-extracts
Culpeper's Complete Herbal: http://www.bibliomania.com/2/1/66/113/frameset.html and Full Text
U.S. Food and Drug Administration Generally Regarded as Safe substances 1972-1980
The Herb Society of America Library Links
Botanical.com Herb index with descriptions, constituents, Medicinal Uses and dosages
A collection of useful and interesting herb focused sites