Found one!

Well, I found a picture online. A friend hunted it down for me and you can see it here...
http://familyfun.go.com/crafts/grim-granny-662441/
Sorry...still haven't figured out how to properly post links on here. But you can copy and paste it in your browser. It describes how to create the costume as well. I found it in a book, not realizing it was online too. :) Huzzah!
I actually got the cane and a purse at the local Salvation Army. It's a great place to find what you might need when creating your costume. :) (Especially if you are on a budget.)
So this will be the costume I am going to make for myself. :)