Page no.29 from the 'Environments' sketchbook. Background is from Alice in Wonderland (Disney, 1951).
Note: It's interesting to see how they use shapes of light and dark to guide you towards the point you need to look. The curled shape curling around the black hole from left to right. The white triangle shape shaped like an arrow saying 'Look here!', that shape again is inside another black round shape with a point going inside it's own shape pointing right.