Originally called a "masseur" if you were male and a "masseuse" if you were female, those giving massage began to be called massage therapists in the 1960s. Because the work did not directly involve the hot spring water, the massage business was not monitored as closely as the baths in the early years.
We do not yet know exactly when massage services were added to the bathhouses in Hot Springs, but we do know that some bathhouses offered them by 1893. By the early 1900s, all bathhouses offered massage.