As one of the merry band that started raising a digit signifying that there was one thousand to go, I have little to offer apart from anecdotal recollections. But one is a gem.
Strolling back to my DC3 at Sumbrough, a training captain, cagoules a colleague to tell the story of his 10,000 error. The captain of one of the most famous incidents in the world, was being checked out on the fleet, having been canned from a good job flying a Viscount with nnnnnnn nnnnnnnn airways.
It seems he was in the hold, at X-teen thousand feet when he encountered a five-bar gate and a ( Seemingly smooth) meadow. Happily, it was quite the most benign crash. But the punch line came when he said... Sic. " And do you know old boy, when we went back to look at the crash sight, it was EXACTLY in the correct position in the hold." The story goes on to say how the little green 10k light at the top right of the altimeter, was named after him.