"A Trace of Memory," right. I doubt if Laumer ever realized his full potential. After reading "Legions of Space," I'm convinced he could have gone anywhere he wanted to as a writer. Going to have to get some more of his stuff.
Yes, indeed. He really was cut down in his prime. Stroke, I believe. Another ten years and he'd have been among the greats, rather than relegated to the B-list.
Used bookstores are a great place to pick up his work! Try some of the Retief stories - you ought to be able to read one collection's worth online at Baen.com, if you are able to read stories online. I know some people hate it.