Classic texts: King's 1898.
Classic texts: Journals: AJP 1871.
Crystallized Aconitine, Portable Mixtures, Approximate Measurement, Glycerized Cotton.
Classic texts: BPC 1911.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.
Plant Healer Magazine: Very relevant to the practitioner.
http://www.henriettes-herb.com - Copyright 1995–2017 Henriette Kress.