Were there any books in the conflagration caused by Lake and Masters?

 ...If so, I guessing that at least one of them was a spelling book.

From Twitter -

From a certain state agency website, emphasis added by me -

Arizona Office of the State Fire Marshal

Note: I didn't see any fire in the linked video.  It was nearly 45 minutes long, so I skimmed it.  It appeared to be just Masters and/or Lake talking.