It is, of course, a bit of an oxymoron to answer this question myself but, FWIW, I have been writing compilers since the 1990's, both as a hobby and as a job.

I have written compilers for lots of different processors and virtual machines with varying key aspects, like compilation speed, memory footprint, executable size, etc.

Check out my home page (http://t3x.org), there compilers for many different languages, from mainstream to pretty exotic. There are also excerpts from many of my books and even the full texts of some of the older ones.

The author is unknown to me (and I am nobody!). FWIW, I just bought the book and quickly read through the chapter on bootstrapping. IMHO, it is really well written.

Is legit. Own books. Author is bad ass.