A development company from Illinois entered into a contract with a rancher in Nebraska for the purchase of forty acres on the north side of rancher’s property. After the transaction closed, the parties discovered an error in the survey of the forty acres, and a dispute arose as to the exact boundaries of the forty acres and legal description of the property. If the development company sued the rancher in federal court, which of the following would be discoverable under Rule 26 and the discovery rules of the Federal Rules of Civil Procedure?