Via Kevin Drum who has a good appreciation. Like Coase, he was intellectually active (and blogging) up to his death at the age of 93. As everyone says, The Space Merchants is just wonderful – politically lively (I believe Pohl was a Trotskyist at the time), and very, very funny. Gladiator-At-Law, his other collaboration with Kornbluth, gets less attention, but is also excellent. Many of his short stories are also very fine, and have much to say about economics and politics – “The Midas Plague,” for example, is a lovely illustration of themes explored in more rarified prose by both Veblen and J.K. Galbraith. His satire of advertising and politics, “The Tunnel Under the World,” which is its own thing, but also foreshadows Dick’s generalized paranoia, is available for free online. If you haven’t read it, you should.