1940s mid century industrial electronics handbook w/embossed cover

Vintage old student handbook from the Industrial Training Institute - Chicago - Industrial Electronics Division. This hand book flips open from the top like a note book and has an embossed cover. It has about 92 pages of technical date, charts, graphs schematics and more.

It measures 7.5" x 4.5" and is copyright on the pages as 1948. This has wear and age.