Sony A500 and A550 Digital SLR Review: Field Test Report
David Busch's Sony Alpha DSLR-A550/A500 Guide to Digital Photography (David Busch's Digital Photography Guides): Busch, David D., White, Alexander S.: 9781435458307: Amazon.com: Books
Sony DSLR-A550 Review
Single-Lens Reflex Camera Beginner Digital Sony Dslr-A550 Maintenance Sensor Cle | eBay