Frank Dehne, from Carleton University in Ottawa, Canada, visited Purdue for a week in October 2002, and on the next-to-the-last day came to our house for dinner. He caught me with the model of my twist-hinged dissection that was crafted by Wayne Daniel.
Compare this with an earlier picture of me, taken by Purdue photographer Dick Myers-Walls in December 2000:
First photo supplied through the courtesy of Frank Dehne.
Copyright 2001-2002, Greg N. Frederickson.
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Hinged Dissections: Swinging & Twisting
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Last updated November 19, 2002.