Searched everywhere to find a copy of the book to buy. The only copy available to purchase is at Amazon. Luckily found a copy at Archive.org to read on line. Patrick Wood mentioned it in a podcast as a good historical account of technocracy.
https://www.amazon.com/Technocracy-American-Dream-Technocrat-1900-1941/dp/0520031105
Do we remain “human”, or not?!!