I still have a bunch of those.
I was given my first Mims book (the very one in your picture) when I was 14 years old. Learning to build little oscillators with 555's and other projects.
The 200-in-1 project kits came soon after.
Thanks for the memories, JW!
![Smiley :)](https://www.fieldlines.com/Smileys/default/smiley.gif)