I find the Bell Labs phenomenon fascinating. This book highlights some of the fascinating parts and one of my favorites. It goes in more detail about the video phone. https://en.wikipedia.org/wiki/The_Idea_Factory.
Just finished this book and I agree wholeheartedly. It is pretty mind-bending for me to consider the extent of the technological changes that happened in my grandmother’s lifetime, and how quickly those changes just faded into the background. I particularly liked how the author presented several different viewpoints at the end on what made bell labs such fertile ground.