Everything you need to understand or teach Paul Harvey's The Rest of the Story by Paul Harvey.
John Pemberton was not a doctor at all. However, he was a corner druggist and back in the post-Civil War era, druggists were respected and relied upon as much as a doctor.
Pemberton was somewhat of an entrepreneur, developing various potions to sell to the general public. He had products such as Dr. Pemberton's Globe of Flower Cough Syrup and Dr. Pemberton's Indian Queen Hair Dye. The entrepreneur in Pemberton knew that the public would not likely buy an elixir called "Mr. Pemberton's Cough Syrup." At this time in America, it was not illegal to make the claim.
It was Pemberton's headache cure that brought him fame and fortune...eventually. It was a headache cure. Pemberton's focus was omitting alcohol from his new syrup. Any alcohol in the concoction would have damaged the medicine's chance of becoming a household headache and hangover...
Paul Harvey's The Rest of the Story Lesson Plans contain 123 pages of teaching material, including: