B: The Dispensatory of the United States of America Twentieth Edition (1918)

Edited by Joseph P. Remington, Horatio C. Woods and others. [This was the last era in pharmacy when plant drugs were widely prepared, both for Regular School, Eclectic and Irregular physicians, and the Dispensatories were the major reference works used by pharmacists to prepare these products. Official plant drugs and preparations are in larger case, unofficial plant drugs and preparations are in smaller case. I have extracted all plant drugs and preparations, excluded non botanicals and those most reasonably used only by physicians...Opium, Digitalis, etc. Michael Moore]

What a great book to have (Free).
Get it while you can!
TDK

Over 1,500 page and OCR searchable PDF
http://www.swsbm.com/Dispensatory/USD-1918-complete.pdf

Varies full versions can be found at archive.org if you use the full title.

up to 1950 24th edition But you will want the 20th edition or earlier for Herbal Medicines.

The dispensatory of the United States of America 

"THE DISPENSATORY of THE UNITED STATEs of AMERICA.Twentieth edition. By Joseph P. Remington, Horatio C. Wood, Samuel P. Sadtler, Charles H. La Wall, Henry Kraemer and John F. Anderson. 2010 pages. J. B. Lippincott Co."

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