The pottery reference guide can be downloaded or viewed using the link below. It contains a lot of high quality images so is a big file (58Mb). You have been warned!
https://onedrive.live.com/redir.aspx?cid=a5bc4ca2049a7681&resid=A5BC4CA2049A7681!394&parId=A5BC4CA2049A7681!128&authkey=!ABGw7Y6e0n7VFt8&ithint=file%2cdoc