Classic texts: King's 1898.
Classic texts: The American Eclectic Dispensatory, by John King, 1854.
Classic texts: Scudder's Materia Medica, 1898: Sedatives.
Classic texts: BPC 1911.
Henriette's herbal blog: On the deadliness (or not) of bitter almond oil.
Classic texts: USDisp 1918.
Classic texts: Sayre 1917.
Classic texts: HistVD, 1911.
Classic texts: Journals: AJP 1885.
Classic texts: Cook 1869.
Classic texts: Boericke 1901.
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.