Rule 11-1007 Testimony or statement of a party to prove content.

If you want to prove what a document, recording, or photo says, there's an easier option when the other side is involved. You can simply use their own testimony, deposition, or written statement to show what the item contained.

This means you don't have to track down the original document, recording, or photo first. If the other party has already admitted what it says or described its contents in testimony or a written statement, that admission can be used as proof. This saves time and avoids arguments over lost or unavailable originals when the other side has already told you what the content was.