You need nothing now a days. Even if you send/take those docs to your interview, they won't touch it . All you need is Passport, Interview fee paid receipt and the person. F1 and Visitor Visa do not need any other extra documents. They will issue/reject visa just looking at the person or say based on interview or depends upon their mood. You can check this by going to American embassy website . This new requirement was started from June 2016.