The Big Picture: Gross Anatomy, Medical Course & Step 1 Review (2nd ed.) by 
First Aid Cases for the USMLE Step 1 (4th ed.) by 
High-Yield Q&A Review for USMLE Step 1: Biochemistry and Genetics by Exam Master has question banks for the USMLE Step 1, Step 2, and Step 3 exams.
