Hartz, Joseph Michael (Professor Hartz). Sash Ribbon Used by Hartz in a Hat Trick. American, ca. 1870s. A rolled antique linen sash with red and blue painted stripes, presented as found from the Stanley Collins Collection, annotated on the outside of the envelope (postmarked 1946) in which it was stored by Collins, “Original Sash Ribbon used by Hartz”.