They'd been standing for it ever since I could remember anything outside my own playpen, which, of course, hadn't been too long.
"Four-Day Planet"
Henry Beam Piper
They made me stay in a playpen for a week.
"Joe Burke's Last Stand"
John Moncure Wetterau
The playpen was by a window where I could see the street; that was good, anyway.
"Joe Burke's Last Stand"
John Moncure Wetterau