Marine AirI think your list is too pessimistic, there is an airworthy B-23. There are YouTube videos of it flying out of Grant County/Moses Lake/Larson AFB.A few years back I was exploring the field and found it getting serviced in a hangar filled with King Airs, so it's still around.
An addition: The Stearman prototype, and the St. Louis YPT-15 you mentioned flew in "from Oregon", are owned and flown by the
Western Antique Aeroplane and Automobile Museum out of Hood River.
https://www.waaamuseum.org/They have lots of rare stuff, much of it is airworthy.
They are terribly unknown, so they deserve a mention.
(If you are in the region, their antique fly-in is in early September).I'll be there with a Goose (not mine), stop by and say hi.
And a correction..it the Columbia XJL-1, not "Columbine".
And "Super Duck"may be descriptive (though you'd be hard pressed to find any Duck parts in it...considering it's a tricycle gear monoplane) but it is not an official name. Yes, it's a shame one isn't flying, but since there were just two
prototypes, that's hardly unexpected.
To add to the extinct flyers list...C-119 (I think).
The DC-4, 6 and 7 numbers are pretty low so should be on the endangered species list. Heck, so are early jetliners and bizjets.
But again, look at the bright side...the F-82 is back as is the Mosquito (if you don't mind new builds)
Give Yanks credit, they may not have gotten their SB2C flying to suit your timeframe, but they have restored a lot of other stuff and saved who knows what from the scrappers. In short, they have done more than the people who complain about the state of the warbird world.
Yeah, we know some folks here don't like new build warbirds, but a new build Mustang is better than no Mustang at all.
As I have said here many times before, in my years volunteering at a museum with a data plate restoration, I never had anyone complain about it not being " real".
Remember, if you're outside a town with a good museum or collection, the only Mustang people will see are cars.
People & kids won't learn (or even think) about WWII, if
In the absence of those new build warbirds, the wealthy guys are flying around in PC-12s or Citations.