This M. L. Cooper Pharmacy window display revolves around digitalis, a medicine made from a plant commonly referred to as foxgloves. It can be used to treat many hearts conditions. Digitalis was first introduced into the medical world in 1775.
Further Reading:
- An Account of the Foxglove, and some of its medical uses with practical remarks on dropsy, and other diseases by William Withering: https://archive.org/details/mobot31753000722048
- William Withering: https://en.wikipedia.org/wiki/William_Withering
- Origins of Medicine: http://www.motherearthliving.com/plant-profile/origins-of-medicine-foxglove.aspx
- A Modern Herbal: http://www.botanical.com/botanical/mgmh/f/foxglo30.html