Rheinisches Bildarchiv Köln, Beckmann, Max, Bildnis Gottlieb Friedrich Reber - rba_c000294
Chicago, Art Institute of Chicago, Gift of Lotta Hess Ackerman and Philip E. Ringer, 1955.822© 2018. The Art Institute of Chicago / Art Resource, NY / Scala, Florence
Saint Louis Art Museum, Bequest of Morton D. May 854:1983
Saint Louis Art Museum, Bequest of Morton D. May 861:1983
Saint Louis Art Museum, Bequest of Morton D. May 866:1983