I picked up a 4th edition Brown and Dunn in really nice shape from an ANA book sale for 75c a couple years ago, pretty much just because I could. It's on my shelf next to the 1st edition ANA grading guide, which also used line drawings.
Yes Brilliant Uncirculated actually did have a meaning years ago. It was for a noticeably nicer than average UNTONED Uncirculated coin.