These are the kind of weird little details that drive me nuts ...
Bill Brown posted at the Ed Forum today a nice analysis of the possibility that Oswald was planning to catch a bus to Laredo (and then on to Mexico) after the JFKA:
https://educationforum.ipbhost.com/topic/31665-david-belin-papers-dallas-city-greyhound-bus-routes-dallas-to-mexico/.
I quote: "Oswald had $13.87 on him when he was arrested. One could get from Dallas to Laredo for $12.80." He thus had enough for the ticket, a Coke and a bag of Fritos, but not much more.
He gave McWatters 23 cents for bus fare and Whaley $1 for the taxi ride, so that brings him up to $15.10 when he left the TSBD, assuming he didn't get additional funds during his pit stop at the rooming house.
But wait, he left at least $170 for Marina when he left the Paine house that morning. (Many sources say $187. Some say he left it in a wallet on the dresser, others - including Marina - that it was in a wallet used for savings purposes in a dresser drawer. The WR says $170 in a wallet in the dresser drawer, so we'll go with that.)
He didn't leave her $100 and take a more plausible $85.10 for himself or even $150 for her and a more reasonable $35.10 for himself.
What does this tell us, if anything?
If the wallet was used for savings purposes and in a drawer, did Oswald simply forget about it? It's just a red herring? He did tell Marina to buy shoes for Junie and whatever else was needed, so it would seem he didn't simply forget about it.
If the JFKA was basically a suicide mission and he expected to be killed or arrested, why did he need $15.10 at all? (Marina suggested he had $15 when he left, so this meshes nicely with what he actually had. Perhaps he had another nickel or dime and did buy a Coke in the TSBD.)
If he thought he'd be taken care of by accomplices, why did he need $15.10? Was he going to be taken care of after he reached Laredo and knew $15.10 would just cover the cost of the getting to the rooming house and on to Laredo? Would he really cut things that close, leaving himself only a $1.07 margin of error by the time he left the rooming house?
Was the JFKA just such a slapdash, unplanned project that he just happened to have $15.10 when he left the Paine house that morning, he gave no thought to anything but shooting JFK, and that's just all there is to it? He had no plan at all when he encountered Tippit?
I lean toward the latter - he was astounded to walk out of the TSBD, just happened to have $15.10 on him, and had no plan at all as he walked along Tenth Street. If there were anything resembling a plan in advance of the JFKA, I have to believe he'd have taken more than $15.10 when he left the Paine house. After he left the rooming house, I suppose it's possible he may have wondered "How far from here can I get on $13.87?" if you want to call that a plan.