You round up that lead pill and I'll endure the grief without knockout drops.
"Bucky O'Connor" by William MacLeod Raine
In this last he suspected knockout drops.
"The Vision Spendid" by William MacLeod Raine
He never saw a bludgeon in his life; and he scorned knockout drops.
"Strictly Business" by O. Henry
He had a horror of knockout drops and the police.
"K" by Mary Roberts Rinehart
And he says Peter was knockout drops.
"The Spenders" by Harry Leon Wilson
Acted like somebody 'd slipped him a round o' knockout-drops.
"The Paternoster Ruby" by Charles Edmonds Walk
That's the knockout drop to give her.
"The Man Who Knew" by Edgar Wallace
But Frank Brooks wasn't full of knockout drops this time, and with a clear head he was no pushover.
"Deadly City" by Paul W. Fairman
Probably it was knockout drops.
"The Bradys' Chinese Clew" by Francis Worcester Doughty
I take it, though, that there's some play with knockout drops, or something of the sort.
"Loaded Dice" by Ellery H. Clark