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I couldn't help comparing this to the rescue of the Cowardly Lion by the field mice in the poppy field, in The Wondeful Wizard of Oz - in fact, with apologies to W. W. Denslow, I conjured up an image showing this as an alternative rescue force!
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"The Wizard of Oz," said Steyning.
"Humphry says that is an allegory about Bimetallism and the Gold Standard, with its road of gold ingots and its silver shoes."
"It has a little wizard in a huge machine," said Stern. "Which is good for marionettes or other puppets."
In the end, the play does include three adversaries - a strawman, a metal man and a beast.
I found all this interesting because the British edition of The Wizard of Oz wasn't published until 1906 - 2 years after this conversation is supposed to take place. It struck me as odd that the story would apparently be so well known among a handful of characters of various nationalities - and then of course, the theory of political allegory is thrown in for good measure. It felt out of place in the general story, but it does show how Oz can pop up anywhere - even the most unlikely places!