91.3 WYEP - The Daily Feedback: Have you been to Kennywood Park or any other amusement parks yet this summer? Those fine establishments owe a great debt of gratitude to LaMarcus Adna
![Early Roller Coasters - 1870 - 1886 LaMarcus Thompson did NOT invent or build the first roller coaster in America Early Roller Coasters - 1870 - 1886 LaMarcus Thompson did NOT invent or build the first roller coaster in America](https://www.westland.net/coneyisland/articles/images/CircularRailwayDrawing-Small2.jpg)
Early Roller Coasters - 1870 - 1886 LaMarcus Thompson did NOT invent or build the first roller coaster in America
![16th June 1884: America's first roller coaster, the Switchback Railway, opened at Coney Island - YouTube 16th June 1884: America's first roller coaster, the Switchback Railway, opened at Coney Island - YouTube](https://i.ytimg.com/vi/PAlaj5PBydQ/maxresdefault.jpg)
16th June 1884: America's first roller coaster, the Switchback Railway, opened at Coney Island - YouTube
![Just A Car Guy: A Thompson gravity switchback railway in front of the Arcadia Hotel, Santa Monica 1890. Just A Car Guy: A Thompson gravity switchback railway in front of the Arcadia Hotel, Santa Monica 1890.](https://1.bp.blogspot.com/-6VdifCXUwe4/WuQGjCgP6tI/AAAAAAAFHKk/3b6S8OMRHwcz99fCdC9D-TXc07uLJwo0gCLcBGAs/s1600/tumblr_oeovvsocwo1sdzmuoo1_1280.jpg)