1920, Life Magazine, volume 76, number 1972, page 307:
Well, slong Harry—seeya again
1987, Stephen King, It: 2, page 231:
"Seeya later, alligator." "Okay." "No," Eddie said patiently. "When I say that you're supposed to say, 'After awhile, crocodile.'"
2009, Barbara Delinsky, Finger Prints:
He threw an arm around her shoulder and gave her a parting squeeze. “You get some rest, you hear?” “I will. Seeya.” With a final smile and a thumbs up sign, he was gone.