When the Circus Master first tries to recruit Lola, he lists San Francisco as an important North American city, and includes Buffalo Bill in a list of major circus figures. This scene is set shortly before Montez left for Bavaria, so it must be late 1845 or early 1846. San Francisco was called Yerba Buena until 1847, and the name Buffalo Bill was first applied in the 1860s to Buffalo Bill Cody, who was born in 1846.