Have you tried Quilters Cache? They have a lot of free block patterns.
Here is a couple:
http://quilterscache.com/A/ArizonaBlock.html
http://quilterscache.com/N/NavajoBlock.html
http://quilterscache.com/P/PinesontheHillBlock.html
http://quilterscache.com/QuiltBlocksGalore.html
(this last one is for the site so you can go look at all the blocks. They have them by size or by name. Awesome site)