The History of Tires and Wheels

https://app.box.com/s/mwb2wop1z92w2ypwwvcp0mcmq9s3uajq

Let us get some vocabulary straight to start with so we've been each on a similar page regarding what we've been talking about when we use the term "jigsaw." It's a bit bewildering but standard "jigsaw" puzzles