This catalog reproduces highlights from the collection, now owned by the San Francisco Museum of Modern Art, including full-color images of nearly one hundred rarely published works. These drawings, sketches, gouache and watercolors reflect the whole of Klee's short but prolific career and are among his most beautiful and important works. The text includes background and critical commentary from noted Klee experts. In addition, an interview with Djerassi reveals his artistic endeavors and passion for Klee, a creative genius whose energy, versatility, productivity, and vision speak volumes to the scientist and anyone interested in the inventive power of the imagination.