Also, via Ann Althouse here's a Tom Wolfe tribute to Thompson, which mentions the book that arose out of the above Nation article.
Wolfe also shares this hilarious story about the first time he met Thompson:
We were walking along West 46th Street toward a restaurant, The Brazilian Coffee House, when we passed Goldberg Marine Supply. Hunter stopped, ducked into the store and emerged holding a tiny brown paper bag. A sixth sense, probably activated by the alarming eyes and the six-inch rise and fall of his Adam's apple, told me not to ask what was inside. In the restaurant he kept it on top of the table as we ate. Finally, the fool in me became so curious, he had to go and ask, "What's in the bag, Hunter?"
"I've got something in there that would clear out this restaurant in 20 seconds," said Hunter. He began opening the bag. His eyes had rheostated up to 300 watts. "No, never mind," I said. "I believe you! Show me later!" From the bag he produced what looked like a small travel-size can of shaving foam, uncapped the top and pressed down on it. There ensued the most violently brain-piercing sound I had ever heard. It didn't clear out The Brazilian Coffee House. It froze it. The place became so quiet, you could hear an old-fashioned timer clock ticking in the kitchen. Chunks of churasco gaucho remained impaled on forks in mid-air. A bartender mixing a sidecar became a statue holding a shaker with both hands just below his chin. Hunter was slipping the little can back into the paper bag. It was a marine distress signaling device, audible for 20 miles over water.