11 Those working and dealing in animal substances

[Guinevere]

Tanners

http://www.squidoo.com/cows-to-jackets
http://www.simplyleather.co.uk/acata...f_Leather.html

Curriers

http://www.maybole.org/home/pettit/currier.htm

Butchers

http://www.ehow.co.uk/facts_7436221_...-butchers.html
http://www.yorkbutchersgild.com/pages/history.html

Silk weavers

http://www.british-history.ac.uk/rep...x?compid=22161

Cotton weavers

http://www.keele.ac.uk/history/curre...RES/COTTON.HTM

Wool weavers

http://www.sheepcentre.co.uk/wool.htm
http://www.history.uk.com/clothing/w...-on-off-looms/

Glue makers

http://cool.conservation-us.org/cool...9/bp19-29.html
http://en.wikipedia.org/wiki/Animal_glue#History

Ivory workers

http://www.bbc.co.uk/history/british...ivory_01.shtml

Horn workers

http://www.eclecticco.net/horn.htm

Whalebone carvers

http://www.sharonburger-scrimshaw.co...scrimshaw.html