Where did the ice cream soda originate?
Ice cream soda is supposed to have been introduced by Robert M. Green in Philadelphia, PA, who added ice cream to plain soda water. The first demonstration of this beverage was made at the Semi-Centennial Celebration at the Franklin Institute in the summer of 1874. Source: Famous First Facts: A Record of First Happenings, Discoveries, and Inventions in American History, 1997, p.253, Joseph Nathan Kane, 031.