There is a website created by the Anti-Dociking Alliance. It shows pictures of many different breeds of dogs whose tails are usually docked with tails. Here is the link to the picture site:
http://www.anti-dockingalliance.co.uk/page_5.htm
On that site, scroll down to the yellow box titled "Toy" #6 is the Yorkie. Click on all the links under Yorkie, including the words Yorkshire Terrier. The links take you to a page of one or more pictures of Yorkies with tails. They are adorable!