Hi there FalconKrunch and welcome to the forum.
Sorry to hear about your dad's passing away and I hope you are coping OK with the loss (it will get easier with time).
The book you mention, is probably worth putting on Ebay as I am sure there are folk out there that would like a hard copy either for collecting purposes or to actually use it as intended. The title of the book would also be useful as a lot of the technical information is available to us in PDF or in picture form JPG etc but having a proper hard copy on hand may be useful and the book may even have extra information but without the title etc it is hard to know.
All the best,