In Canto Three of his poem John Shade (the poet in VN’s novel Pale Fire, 1962) mentions some kind of link-and-bobolink that he could find in life:
Life Everlasting – based on a misprint!
I mused as I drove homeward: take the hint,
And stop investigating my abyss?
But all at once it dawned on me that this
Was the real point, the contrapuntal theme;
Just this: not text, but texture; not the dream