The great Wallace shows An innovation in aerialism, the triple revolving trapeze of the Sisters Vortex. Courier Litho. Co., Buffalo N.Y. Summary Circus poster showing the Vortex sisters performing their trapeze act. Created / Published Buffalo: Courier Litho. Co, 1898. The frame consists of weathered, rustic wood. While the poster itself is circa late 19th century, the frame is more contemporary, likely from the early 1990s, or more recent. Dimensions: 15.25" x 19.5" x 1.5" 19th Century Collection GrpC 7.3