? A mock-up for a piano-hinged dissection T-shirt ?
for Piano-Hinged Dissections: Time to Fold, by Greg N. Frederickson:

In Fall 2018 I found on the web this mock-up for a T-shirt displaying the cover of my book!

Who created it? Could this be a plea from an anonymous fan to produce an official T-shirt for my third book? Here is a link to a larger image of the shirt. which I copied off of the website of amazom.uk


copyright 2018, Greg N. Frederickson.
Permission is granted to any purchaser of Piano-Hinged Dissections: Time to Fold
to print out a copy of this page for his or her own personal use.

Last updated November 2, 2018.