is pretty good.. add to that this screen capture I did from C-Span coverage of the event and you can really get a good idea of how many where (and were NOT) there.
It looks like you can see the blue "Freedom Works" bus he mentions in both for reference.
I agree that we shouldn't become to complacent about this... 70,000 is a fair showing. IMO we can't allow nor afford to let the voices of this tiny, ignorant, bigoted bunch sway our reps against what the majority of Americans want.. and desperately NEED.