As ever, I reserve the right to tease details about the future which I will neither confirm nor deny
But I do love the speculation!
His twin sibling who will have a very difficult relationship with their brother!
I'm not as much of an expert in economic history, but from my understanding the Long Depression as we know it was influenced by factors that won't take place in WiF. There's certainly going to be a series of economic contractions in the 1870s (and some in the 1860s) but probably nothing as major as what happened OTL. There is going to be a bust cycle hitting the US after the war - common because the economy first got stuck in a war footing then pushed right into an expanding but dislocated peace - with some long term problems. The over investment in railroads is still an issue for the latter half of the 19th century.