Bonnie J. Shucha, University of Wisconsin Law School, has published Badger State Infamy: Wisconsin's Early Sex Trade at Wisconsin Lawyer 22 (October 2017). Here is the abstract.
This article describes the early sex trade in northern Wisconsin. Alarmed by numerous newspaper reports of sex trafficking, concerned citizens pressed the governor, state legislators, and law enforcement officials to rein in the booming sex trade. Results were mixed, but the efforts in Wisconsin were only the first of many to protect vulnerable adults and children from human trafficking, attempts that continue to the present day.Download the article from SSRN at the link.