"Madams moved west as entrepreneurs, and though the New Western history has touched on many topics, the business end of frontier prostitution remains virgin territory, so to speak. Knowledgeable madams first tried the cowtowns of Kansas and then moved west into the mining camps of Colorado. Moving east from San Francisco into the uproar of Virginia City Nevada, madams issues tokens worth from 5 to 50 cents. In the brawling, bustling Western mining camps, according to Mark Twain in his class book Roughing It, full jails and hordes of prostitutes were signs of prosperity."