The Sun (New York), September 22, 1883.
But the joke was already old by then:
Charley quite outwitted: She leaned her head upon his shoulder and said, in her most insinuating tones: “Charley, dear, I’ve heard so much about dudes I want you to get me one.”
Charley smiled at her innocence, but resolved to humor it. “Would you prefer a French dude?” he asked.
“I think not,” she answered, squirming coyly. “How would a German dude suit?”
I don’t think it would suit at all. I don’t understand German.”
“Well, what shall it e, then?”
It was her turn to smile as she said, with an arch look:
“A Yankee dude’ll do.”
- Brooklyn Eagle.