Keep in mind that during this era of the late 1800's-early 1900's ... many things were thought to have inherent medical properties, including Coca-Cola, cereal, snake oil and various strange medieval looking medical devices. Needless to say (with this in mind) that a thermal hot springs most assuredly had to have some strong medical properties. It certainly was touted as such in curing all sorts of diseases.  Ironically, as soon as  Whittington Park made its debut, it shut down for an entire season due to a Small Pox outbreak, which scared the Major
     Leagues all the way to Little Rock in 1895.