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I flipped through my Forrest Mims Engineer's Mini-Notebooks so many times the pages almost fell out.

Radioshack catalog archive in case anybody missed it:

I have a collection of those… I did a little kit based on one of his Mini-Notebooks: https://www.tindie.com/products/jcalhoun/transistor-logic-pi...

I also did one for the venerable 555 Timer (but it needs another iteration before I should market it).

These were a great series. I wonder if there is anything comparable nowadays.