Compiled by I. Marc Carlson (Diarmuit Ui Dhuinn/Diarmaid O'Duin) (IMC@Vax2.UTulsa.Edu; LIB_IMC@Centum.UTulsa.Edu; )), based on discussions and material from :

And a LOT of material from:

Leatherworking in the Middle Ages - Credits.  Copyright © 1996, 1999, 2001 I. Marc Carlson
This code is given for the free exchange of information, provided the Author's Name is included in all future revisions, and no money change hands