Pattern Parade
Scan down this collection and you'll find a "Teddy Bear Back Pack" pattern, with ordering information at the bottom of the page.

Simplicity Crafts And Clothing Patterns
Enter their on line store to find patterns galore!

Elizabeth Lee Designs
Carries Sunrise Designs "It's In The Bag" Pattern in theirSunrise Design patterns. I've personally used this pattern and loved it. It includes luggage styles and baby diaper bag patterns.

Wy'East Fabrics Catalog
Enter their catalog and check the Green Pepper Patterns for a dog back pack and Multi sized duffle bag style bags. Also see their selection of Kwik Sew patterns for a wonderful pattern that has a variety of Back Pack style.