smokey bear

[Mullins, Bill]

smokey bear = state trooper.  OED has 1974

Pennsylvania | Gettysburg | The Gettysburg Times | 1973-12-06 p. 8 col 1.
"Truckers Use Own Defense Against Cops"  By THE ASSOCIATED PRESS

" "Smokey Bear taking pictures at milepost 60 westbound," the first trucker says after spotting a police radar from the opposite side of the highway."

[this is also an OED antedate for picture = radar (1976) ]