There were a few hasty good-BYS then.
"Ahead of the Army"
W. O. Stoddard
Won't you let me ferret out a pair of pajamas, to say nothing of good-BYS?"
"Garrison's Finish A Romance of the Race-Course"
W. B. M. Ferguson
This done, the two wedged their way out, without ever troubling Peter or Miss Felicia with their good-BYS, Garry telling Corinne that the old lady wouldn't know they were gone, and Corinne adding under her breath that it didn't make any difference to her if she did.
"Peter A Novel of Which He is Not the Hero"
F. Hopkinson Smith