They are, sort of, but the book has been downsized to 300dpi. Actually the scans I got were 96dpi with 600dpi dimensions, I re-sampled them to 600, and then downsized to 300dpi.
I'm re-posting the book now. I uploaded the wrong version (uncompressed) here and at CB+ before which was over 100mb. The compressed one is 23.7mb.
-Eric