On the rocketry Forum, Steven provided a link -
If you haven't seen these, they are worth watching. Both presentations took place at the Seattle Museum of Flight.
I'm sure I've posted these links before - they are posted again for any new blog readers to hear Model Rocket history from the people that started it all.
You might even learn the correct pronunciation of Estes, Centuri, Gleda and Piester!
A Conversation with Vern and Gleda Estes
From July 5, 2014 - CLICK HERE
And some Centuri History:
Lee Piester at the Museum of Flight - The Golden Age of Model Rocketry
From May 7, 2016 - CLICK HERE