Here's one sample of Beattie's criticism of Hume's footnote, which I mentioned previously.
An Essay on the Nature and Immutability of Truth In Opposition to Sophistry and Scepticism. By James Beattie, ... By James Beattie
This is assuming that Hume's claims are true; Beattie will go on to deny that Hume's claims are, in fact, true. You can get the rest of the criticism through the link.