I recently adapted an 1890s lithograph poster by Theophile-Alexandre Steinlen advertising cocoa and tea sold by "Compagnie Francaise des Chocolats et des Thes," the French Chocolate and Tea Company, for a tea towel. My process for hand painting is below.
I decided I liked the design better with a colored table cloth.
I found the poster in a fantastic book called "Posters of Paris." I highly recommend.