In this catalogue, there is a photographic reproduction and documentation of Lissitzky's "Beat the Whites with the Red Wedge." The image size of ~18 x ~22 inches is identical to the poster held by the Sackner Archive. However, there are differences in the cluster of forms in the upper right corner. The authenticity was documented by Eugene Kotvin, Curator of Prints, Russian Museum, Leningrad. Kotvin noted that there were two editions of the print with two lithographic matrices produced in Unovis Workshop owing to the large numbers required. This explains the typographical differences among posters. -- Source of annotation: Marvin or Ruth Sackner.