Abbott's Menthol Plaster Tins

A pair of Abbott's Menthol Plaster Tins. The red one is likely older as it states it "cures" rheumatism, neuralgia, headaches, nervous disorders etc. whereas the yellow one is "recommended for" the same rheumatism, neuralgia etc. A number of medicines changed their label after the Pure Food & Drug Act of 1906 when ingredients had to be listed and claims of cure verified. Back when they passed laws to improve the public welfare & safety. Looks like the company moved to Boston also.