As we go through Dads stuff I found a 1923 Fordex book and it is packed with good information but I have never heard anyone here talk about it that I can remember. Keep in mind I'm getting up there. Cheers Colin
Colin, The Fordex sales manuals were published for Ford by a company called Sales Equipment Company, if my memory is correct. I don't know the year they first were published, But I have a 1925 hardback copy.
I have a 23 one.
There are two versions: pocket, and desk.
There are several on e-bay right now starting at $69 up to $180. Interesting book.