The link to the abstract on the Lesch-Nyhan story contained a link to George Packer's blog. This is good. There's a link there to an article on Rove in The Atlantic, which also sounds good. This 2003 article from the The New Yorker (which I did read) contains more information on Rove than you'd probably care to know. Here's a snippet:
Rove had come out of nowhere—to be specific, Utah, from a nonpolitical and not very well-established family that he didn’t talk about much. . . .
I asked Rove if he remembered his first impression of the Bushes. “The father was incredibly gentle,” he said. “Great character. Very thoughtful. Really generous in his openness and attitude. Clearly pained by Watergate as it unrolled.” His first memory of George W. Bush was more precise. “It was the day before Thanksgiving, 1973,” Rove said. “Chairman Bush’s chief of staff called me and said, ‘I’ve got to be at a meeting on the Hill, the chairman’s got to be at a meeting at the White House, the other people in the office have already gone, and the eldest son’s going to be coming down from Harvard. He’s going to arrive at the train station, early afternoon. He’ll call over here when he gets to the train station. Meet him down in the lobby and give him the keys to the family car.’ I can literally remember what he was wearing: an Air National Guard flight jacket, cowboy boots, bluejeans, complete with the—in Texas you see it a lot—one of the back pockets will have a circle worn in the pocket from where you carry your tin of snuff, your tin of tobacco. He was exuding more charisma than any one individual should be allowed to have.” . . .
It still makes be gag when I read that last part.