Berenstain, Stan 1923- creator Berenstain, Jan 1923- joint author. text New York Random House [1969] monographic eng [35] p. col. illus. 24 cm. An acrobatic act begins with one bear on a unicycle and ends with twenty-one bears and sixteen wheels flying through the air. by Stan and Jan Berenstain. Counting PZ7.B4483 Bc [E] 72077840 DLC 020416 20190501172407.0 3606043