Re Davids comment re "The Model Railway Men":-
Ah, Amazon's auto-pricing algorithm strikes again!
See also: https://www.techdirt.com/articles/20110425/03522114026/infinite-loop-algorithmic-pricing-amazon-how-book-flies-cost-2369865593.shtml
The algo has pushed the price up to £857! However, 2nd hand copies go for around £20. The Kindle version is much cheaper. I am not sure how they are offering a "new" copy. They could be remainders that sat in a box for many years.
Does anyone think a hard copy paper version would be more acceptable? If so, they would be cheaper than the second hand originals thanks to the print on demand services that were not available back in the day!
My father was a teacher/educator/author and the engineers mentioned could bring home to a childs mind that these guys were creative as engineers, in the same way he was as an author, and they could be creative in their own lives. ie to remove boundaries between creative/inventive people and those who may become so.