Lots of academic and engineering things from back then are great. I have an incomplete set of the radlab textbooks. They're still useful even today, and have a

Lots of academic and engineering things from back then are great. I have an incomplete set of the radlab textbooks. They're still useful even today, and have a really careful pace to them because they were written for a generation for whom electricity was still relatively new. One of the things that is a real shame is just how artfully bound those old books are. Leather, thick but smooth paper, etc.