This generously illustrated volume focuses on the poignant friendship of Franz Marc and August Macke, two innovative members of the Blue Rider group.During the five years Franz Marc and August Macke knew each other, the two men carried on an artistic and personal friendship that had an immense impact of each of their careers. This book traces their relationship and features meticulously reproduced images that bring their paintings--and the bond they shared--to life. In addition to paintings, watercolors, and drawings from both artists, this book includes objects and documents that show their connection to one another. A series of essays explore the artists' conversations about color theory and non-representational painting, their work with the Blue Rider group, their joint mural, Paradise, and the influence of French painters on their art. This book also reveals how 20th-century Expressionism evolved during Marc and Macke's collaboration. While celebrating the two men's obvious differences, this volume reveals how their differences served to deepen their friendship and how their distinct artistic styles influences one another.