Another thing to keep in mind re: Oswald making it out of the building...
The simple fact that Oswald did indeed make it out of the building should tell all of us that there was no conspiracy involving him as a patsy. If he were a patsy, he would have been killed before ever making it out, much less be allowed to wander the streets jumping on busses and in taxis.
The other oft-repeated absurdity is that he was "on his way to the Texas Theater to meet a contact." Uh-huh, so you hop a bus, hail a taxi, take the taxi past your rooming house, backtrack to the rooming house, stroll down the sidewalk to Tenth Street, shoot Tippit as you are walking in the opposite direction from the TT, scramble your way to Hardy's Shoes, lurk suspiciously in the vestibule of the shoe store, and unnecessarily enter the TT without paying.
Right, those are the actions of a guy on his way to "meet a contact."
Those dang conspirators were so clever they carefully instructed Oswald to "Make sure it doesn't look like you're on your way to meet a contact at the Texas Theater. Don't do anything as obvious as simply taking a bus or taxi to the theater and buying a ticket. And, by the way, don't ask why it's necessary to rendezvous at the Texas Theater at all or why someone can't simply give you a ride. We know what we're doing here, Mr. Patsy."
Here's kind of a nice illustration of Oswald's route.
