Nordloh Toy Co. c. 1945 "Jefferson Tiles" Ceramic Design Blocks first edition book Individual blocks measure 2" long

Individual blocks measure 2" long  per side and 5/8" thick

with a nice weight that makes both tossing them and extracting pieces very satisfying

7 5/8" x 9 1/4"

as looking under the jacket shows

or for padlocking a box of precious tools

Nordloh Toy Co. c. 1945 "Jefferson Tiles" Ceramic Design Blocks first edition book Individual blocks measure 2" longI've had a couple of sets of Richter's stone ceramic blocks, but I'd never seen a set of these Jeffereson Tiles, which seem to be much rarer, and I like them even better. It doesn't appear that this set was much if at all used, and while it's possible there are a few of the smallest sized (triangular) blocks missing, it is very very close to complete, including the original design booklet, with tons of diagrams for what one might create, as well as a