Where did the phrase "hunkie dorrie" come from?

It’s actually hunky-dory.

According to John Russell Bartlett’s 1877 Dictionary of Americanisms, hunky-dory was the invention of a performer called Japanese Tommy, who was popular in the 1860s. He is said to have based it on the name of a street in Tokyo, or perhaps Yokohama, called Honcho-dori. (In Japanese, Honcho-dori means something like “Main Street,” and many cities have one.) But Tommy wouldn’t have thought of it if there hadn’t already been the adjective hunk in English meaning “safe” or “in a good position.” This particular hunk derived from a Dutch word meaning the goal or “home” in a game. And that in turn evidently came from Frisian. In West Frisian honck means “house” or “safe place”; in East Frisian hunk means “nook” or “retreat” or “home” in a game. Before becoming obsolete, that hunk spawned hunky, and whether it was really Japanese Tommy’s doing or just children’s play, somebody added dory to make hunky-dory, first noted in print in 1866.