Take the profit and the crime out by legalizing something and it will take much of the glamour out and keep those who desire to use it in moderation from becoming criminals. There were more opium addicts in this country at the turn of the century, than there are today. It was mothers and grandmothers and aunts and sisters that were addicted to these medicines which would be totally banned today. Put Mrs. Winslow s Soothing Syrup on their gums. Totally unregulated a well meaning mother would apply it liberally to the baby s gums, and many a baby never woke from this soothing treatment.
Regulation is healthy but prohibition is inhibiting and a form of censorship.
There is usually more anti ephemera than there is pro on addictive substances. The exception is advertising for the liquor manufacturers. The only Hemp cards we know of are either modern, sixties and 70s comic or message type cards, or showing hemp growing in Kentucky etc. This comes from growing hemp for the making of rope. Some theories are that the Salem Witch Trial accusers were chewing on it, but even if they were, it would not have caused such symptoms.