This design is from a lost manuscript of Ernest Irving Freese found by Greg Frederickson and published in his 2018 book “Ernest Irving Freese’s Geometric Transformations: The Man, the Manuscript, the Magnificent Dissections” Frederickson mentions Freese’s manuscript in the bibliography of his 1997 book, “Dissections: Plane & Fancy, and included selections from it in a 5-part series of short chapters spread out through his 2006 book, “Piano-Hinged Dissections: Time to Fold!” But his 2018 book contains the most complete collection of Freese’s work. Greg Frederickson’s complete work can be found at his website. Thank you for the additional information Greg.
The Plates make for great coloring and puzzles and there are lots of them. Download a PDF below that you can use to color and cut out these same shapes.