For those interested in a scholarly take on the DCU and its crossovers, I came across this book,
Classics on Infinite Earths, on Amazon. Author Julian Darius argues on that the DCU is old enough to have produced several classic stories and he tries to create an admittedly subjective cannon centered on the JLA and various crossovers.
I've read most of the Amazon preview and found it entertaining and insightful. I do note that Darius admits to what seems to be a bias by focusing on comics from the '80s on. It's not that such a focus is a bad thing (all canons have to start and end somewhere), but his reason is because few earlier comics, he claims, aspired to literary value. I'm not sure how he defines literary value at this point. However, he admits that his choices are subjective and that a canon is meant to be fluid and changing, to open a conversation instead of shutting one down. I enjoyed his overview of the JLA and discussion of Kingdom Come.
Since current discussions on LW involve Crisis, this book looks like an appropriate tie-in.
I note that this book was published in 2015, so there's a good chance some of us have read it. Any thoughts? (Sorry if this has been discussed before; I couldn't find it in the search engine.)