"As a child, Johnny Mercer, (lyricist of the song 'Moon River'), picked
huckleberries (like wild blueberries) in the summer. To him, the berries had a personal connection with a carefree boyhood, strengthened by association with Mark Twain's character Huckleberry Finn. The implication was that Holly Golightly, who was actually of hillbilly stock, and Huckleberry Finn might well have been friends, if ever they had met." from 'Love Me Tender: The Stories Behind the World's Favourite Songs' by Max Cryer.
Oh, dream maker, you heart breaker
Wherever you're going, I'm going your way.
Two drifters, off to see the world
There's such a lot of world to see
We're after the same rainbow's end,
Waiting round the bend,
My
huckleberry friend,
Moon River, and me.