Article of the US magazine PIC of April 1938 presenting the Sport. “Water Polo is one of the toughest, most strenuous and most gruelling Sports known to man. It calls for the teamwork and science of hockey, the physique and knowledge of wrestling, the fierceness of lacrosse and the speed and endurance of a Marathon swim Champion. It is played by two teams of six players each and the object is to score the most points with a white rubber ball only seven eights inflated so that it can be held with one hand. The goals are wooden backboards".
Source: magazine PIC, April 1938