Archive.org is so weird. Henry Ford died in 1947, so Moving Forward is out of copyright (and consequently available on Project Gutenberg, as another post points out). Yet on archive.org I can only "borrow" an encrypted copy.

Meanwhile, Foundations of Mechanical Accuracy was published in 1970 by Wayne R. Moore, who was presumably still alive at the time, so its copyright status is still very much in force... but archive.org says "Here, have a nicely-OCR'ed .PDF."

I hope they're able to survive their present legal difficulties, but I'll be darned if I can see how.