Don E Wirtshafter speaking at the 44th International Congress on the History of the Pharmacy, Washington, D. C., September 7th, 2019. Poor audio at the beginning, it gets better.
source
The First Golden Era of the Cannabis Pharmacy.

Smoking Hemp Flower Blogs
Don E Wirtshafter speaking at the 44th International Congress on the History of the Pharmacy, Washington, D. C., September 7th, 2019. Poor audio at the beginning, it gets better.
source