Linus' security blanket made its first appearance in Peanuts ... who trespass on school property will be welcomed. Naturally, Snoopy is the biggest supporter of the latter policy.

Security, to a child, is sleeping in the back seat of the car, knowing mom and dad are in the front, doing all the worrying.

As Charlie Brown peeps at Linus' signature blanket, he wonders aloud why Linus ... with Charlie Brown and his dog Snoopy at ...