Looking at the Chapter 4 gallery, I boggled once again, as I have before, at the "skyscrapers" in those two Apollo 10 images of Sinus Medii. This image, which Mike says is AS10-32-4862, is probably actually AS10-32-4820, since 4862 doesn't exist. Here's the "official" version.
Now, according to the Hoagland/Bara mythology, this is one of the best examples of "overarching glass structures" that were only revealed by examining Ken Johnston's personal collection, BECAUSE THE OFFICIAL VERSION HAS BEEN AIRBRUSHED BY NASA.
My thought today was, "Hang on. Ken's collection was of prints, not digital versions. Very obviously this image has been manipulated in Photoshop -- gamma-stretched, perhaps -- to bring out those 'skyscrapers.' " But now, WHO SCANNED THAT PRINT to make the digital version? It's a pretty safe bet that it was Hoagland, on his own office scanner, which must have had very heavy use in that period.
image credit: NASA/ruined by Hoagland
So is Hoagland showing us, not glass skyscrapers above the Moon, but the horrible condition of his scanner glass -- scratched, dusty, and partly opaque? Could that curly thing top right be a Hoagland beard hair? Is the difference between the two versions simply a difference between an amateur and a professional photo lab? I think we'd all like a comment on that question from Hoagland or Bara. Think we'll get one? Nah, me neither.
[New readers who may be thinking 'WTF is Ken Johnston?' can find out here]