Scanned version copyright © 2003-2014 Michael Moore. Used with permission.This is the .html version. You'll find the .pdf version on Michael's site.
Other tomes: Felter - King's
The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.
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.