Sentence:  You'll never guess what Wollheim's men have found!¶ A forest full of perfect echo-ﬂowers.¶ Honest to <WSD>Foo</WSD>! He says ”Salad!” to them,¶ And they obediently answer back, “Salad!” 
Meaning of the word marked with <WSD> tags:  A mock deity of early science fiction fandom; a fannish ghod.