An Excel spreadsheet would be a good tool to record the use of baking supplies.

Kitchen Chemisty is a cupacakery and baking supplies store in Stroudsburg, Pennsylvania. They sell cakes and cupcakes as well as baking supplies. They also offer in-store baking classes.

The Corpus Callosum. You can go to Neuroscience for Kids to find answers like that.

*Actually, the Corpus Callosum is the structure, but the type of tract is commisural.

There are many companies that will supply stock for commercial baking supplies. Check out http://www.centralrestaurant.com/Bakery+Equipment-sn78.html for details.

A store that sells baking supplies in Spokane, Washington is Cooks Dream. Their website is as follows: cooksdream.com/store/nor-loaf.html .