This is formed by placing two strips of paper together, giving them a single half-twist as if they were one strip, and joining their ends as shown in the illustration below. If you're enjoying ...

7.75 x 10.5 in. (19.7 x 26.7 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

7 x 9 in. (17.8 x 22.9 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...