He sold milkshake machines to the McDonald Bros.' burger joint, got curious about their operation & soon made history
[DOC] [TLE] Ray Kroc and the Fast Food Industry - Wiley [PAR] In 1954, a fifty-two-year-old milk-shake machine salesman saw a hamburger 
stand in San ... By 1960, there were more than 200 McDonald's outlets across the 
country, ... And Kroc was curious to see what kind of operation needed the 
capacity to churn ... he asked.