I don't see any reference to snowballs in the newspaper copy. The weather report didn't call for snow, the temperature was above freezing all day, and the articles all agreed that every effort had been made to clear out the previous day's (and night's?) snow from both the playing field and the stands. Cushions were thrown (did management actually provide free seat cushions in those days, or did people have to rent them?) and one writer saw bottles, but most of the disruption was apparently simply from people storming the field. One of the articles mentions that there was an overflow crowd behind ropes in the outfield, so an attendance figure higher than 15,000 seems likely, despite the cold. (Based on the newspapers, It didn't snow, and wasn't expected to.) As for the police, it would appear that the normal procedure -- then as now -- called for rent-a-cops paid by stadium management, and that Brush and company had decided the regular police would handle things even after being told by the police commissioner that they wouldn't.
I don't see any reference to snowballs in the newspaper copy. The weather report didn't call for snow, the temperature was above freezing all day, and the articles all agreed that every effort had been made to clear out the previous day's (and night's?) snow from both the playing field and the stands. Cushions were thrown (did management actually provide free seat cushions in those days, or did people have to rent them?) and one writer saw bottles, but most of the disruption was apparently simply from people storming the field. One of the articles mentions that there was an overflow crowd behind ropes in the outfield, so an attendance figure higher than 15,000 seems likely, despite the cold. (Based on the newspapers, It didn't snow, and wasn't expected to.) As for the police, it would appear that the normal procedure -- then as now -- called for rent-a-cops paid by stadium management, and that Brush and company had decided the regular police would handle things even after being told by the police commissioner that they wouldn't.