Good bedtime reading...very Philips-centric...as you'd expect from the title...
https://www.maximus-randd.com/piets-hom ... n-pt1.html
Part 2...1950-1956...
https://www.maximus-randd.com/piets-hom ... n-pt2.html
More interesting links from the same contributor...
https://www.maximus-randd.com/
Steve A.