5/19/19: In November, 2018, DC released Young Justice Book Three. It collects #18-19, and all twelve issues of the Sins of Youth story arc. I had purposely left Sins out, because it already has a trade paperback, but I suppose it has gone out of print.

For the cover of Book Three, DC chose YJ #18. I had suggested that as the cover of my proposed Volume 2, but at this point, my issue groupings are way off from DC's. Still, what about it? Did you buy it?