Bwana Tumbo's ride - drawing of Roosevelt riding bike across creek with policemen in background

Front:
Bwana Tumbo's Ride The jungle's a-shake with a fearsome fright; The animal world's in a sorry plight. For Bwana Tumbo is on his way, With guns and an army of men, they say. And few their escape can hope to make From his speedy Corbin Coaster Brake.

Back:
SXCN POSTON CARD MY TORBIN yello YO