I've never understood why Steve Howard (Trevor) was killed off in WW#248. He'd only been back a short while (and he wouldn't be gone for long), but the story in which he was killed off wasn't great and it seemed like an unceremonious ditching at the time, although he hadn't been exactly useful.
Was it editorial decree? Was Jack Harris just tired of him (although he wasn't on the title much longer)? Is there some other tea?
In my mind, the best thing to come out of the second death of Steve was the great cover to Adventure Comics #460:
Adventure_Comics_460.jpg