Some More of Chicago's Top Innovations-- Part 1

From the January 19, 2014, Chicago Tribune "Chicago's top innovations: Single list can't hold them all" by Phil Rosenthal. Back in January, the Tribune ran a list of twenty innovations accredited to Chicago and surrounding area. I printed them, but mostly in short form back then. //// Here are the Top Twenty: 1. Nuclear reaction // 2. Skyscraper // 3. Cell phone // 4. Open-heart surgery // 5. Balloon-frame construction //// 6. Mass production of McCormick Reaper // 7. First gay rights group // 8. Reversing the flow of the Chicago River // 9. First televised presidential debate // 10. Fermi-Linux Code. //// The second 10: 11. Farm Silo (Right here in good ol' tax-paying Spring Grove, Illinois) // 12. Ferris Wheel // 13. Deep dish pizza // 14. Consumer preferance research // 15. Mechanical dishwasher //// 16. Pullman sleeper car // 17. Game of softball // 18. Zipper // 19. Mail-order retail // 20. Vacuum cleaner. //// Well, Phil Rosenthal Thinks There Should Be more. Next. --DaCoot