I don't remember the leather bound books, but popular electronics had a book club: https://archive.org/details/197911PopularElectronics/page/7/mode/1up https://

I don't remember the leather bound books, but popular electronics had a book club: https://archive.org/details/197911PopularElectronics/page/7/mode/1up https://archive.org/details/197911PopularElectronics/page/7/...