Page 25, assuming your pages are the same as mine.
Basically, as of June of this year, it was about...
NDS: 1,850,000
PSP: 1,500,000
But those are just rough guesses. Then NPD vocally decided they didn't want the info getting out anymore, and the flow mostly dried up, but it's believed that the PSP continued it's trend of stomping the DS in America after a powerful launch (despite a Mario64DS bundle), finished closing the gap, and probably even pulled into the lead. (If you want a guess, I'd say just under 2 million for each of them.)
Then the second wave of DS games (Nintendogs, Castlevania, etc.) hit America, and is believed to have put the momentum back on Nintendo's side. How strong is anyone's guess. But it presumably held until now, with Mario Kart, WiFi, and Animal Crossing giving Nintendo an additional kick of unknown size. It's likely that with Nintendo being in the lead going into the holidays, and with nobody else having much going on in the console front (aside from some fruitless Xbox360 advertising), the DS will likely win a significant victory over the PSP. Possibly large enough to cement the PSP's doom in America. Unless Sony pulls a rabbit out of their hat. Then Nintendo is doomed, of course. (But seriously, if the PSP manages to win Christmas somehow, then the DS might not ever recover in America. It's a very dangerous time in the console war.)