ON SSRN, you can read the introduction to David Bernstein’s Rehabilitating Lochner for free. My review isn’t out yet, but I think I can safely say that the book is very much worth your time.

UPDATE: Reader John Kranz writes:

I bought the book on your suggestion and it arrived a couple days ago. Awesome so far.

While waiting I got and read Richard Epstein’s “How Progressives Rewrote the Constitution.” Amazon is to be credited for this pairing.

They’re usually good with that sort of thing.