Here is a fun booklet which is a 61 pp introduction to electrical installations & maintenance, geared toward the mechanic or electrical engineer.

It has seen better days and is undated. It was written by Sydney B. Culliford who was the Instructor in charge of the Department of Electrical Maintenance at the Wentworth Institute in Boston. There is no copy of this book listed in Worldcat but I'd venture to guess from the typeset it probably dates from the 1920s-1930s.

100% of the proceeds of this sale will be donated to the Yankee Pole Cat Insulator Club in remembrance of our gracious summer swap host Larry Emmons.

I am asking $10 which includes shipping to your door in the US.