DU-4-FUN! c. 1920s Wooden Tangram Puzzle with Excellent Graphics and Design Booklet

I've had a few old tangram puzzles over time, produced by various makers, and I'll continue to snap them up when I come across them, to my eye (and mind) great little design objects, particularly as whole package: box and booklet and puzzle itself. And this an especially fun one: DU 4 FUN, spelled out as if by pieces of the tangram. With 212 examples in lovely blue ink of possible forms to be composed using the blocks. I've turned up no reference for this or any other "Du-Zee" puzzle, but an adhered paper on the back of the booklet identifies two sources in New Hampshire who distributed it, a small operation for sure!

Box 3 1/8" x 3 1/8". C. 1920s or so I think. Very good condition. There is a tear around the staple on the last page of the booklet, otherwise crisp and clean.