The Seattle Tree Fruit Society have a great Key to identifying apple varieties. This key was recently moved to a separate website.
This link will take you directly to the place where you can key out your apple variety.
Apple Identification key
If you want to cruise through the world of apples, go to this website and click onto PHOTOS or APPLE LIST
Here you see apples in their wonderful colour. They look good enough to eat!
This wonderful Key takes the mystery out of apple varieties.
Whenever I go to and apple festival, I remember the colourful show, but traits of individual varieties are lost to me. With this key, that old apple tree in the backyard can be identified.