Apparently, the woman was an armchair Freudian, and everything had sexual connotations.
Heinlein didn’t publish the letter the editor (Alice Dagliesh) wrote where she describes him as such, but in a letter from Heinlein to his agent, he discusses it (Grumbles from the Grave) and goes on to tell his agent that they may have to look for a new publisher, since Heinlein, upset by this, apparently responded to Dagliesh’s criticisms by writing back subjecting one the ‘girl-and-her-horsie’ books that Dagliesh wrote with the same “Freudian” analysis. I’d pay major bucks to see that letter.
As far as I’ve figured, Dagliesh was refering to Willis’s extensible eye stalks. Maybe. But anyone who objected strongly (and she did) to flat-cat’s “pulsating love habits” (approx. quote: I don’t have Grumbles handy) isn’t someone who’s opinion I trust.
Another notorious incident, a library journal (I believe) published an article or a letter which was all huffy about the lack of lit’rary virtue and purity in that rocket-ship stuff that Heinlein wrote. Dagleish wrote to the journal to conceed all the writer’s points! We’d probably have more Juvies if the publisher had given Heinlein an editor he could work with.
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Clean living, hard work and our strength is that of 10 men because our hearts are pure!
Fenris