In certain cases, you might be able to write a letter to the other side and request the documents that you need. However, in more formal cases, you will likely have to draft more formal discovery demands. There are usually forms available for this in local law libraries, from the court clerk's office, or online.
To serve a discovery request on a nonparty (where permissible), you must follow the procedures in Federal Rule of Civil Procedure 45. You must sign your discovery requests and responses and include your name, address, phone number, and email address (if available).
Write out each fact you wish the other party to admit is true. When writing these facts, be as clear and concise as possible. Each request must be for a single fact; do not include multiple facts, compound questions, or subparts.
Service of interrogatories. After commencement of an action, any party may serve written interrogatories upon any other party. Interrogatories may not be served upon a defendant before that defendant's time for serving a responsive pleading has expired, except by leave of court granted with or without notice.
A discovery is recognizing something that already exists for the first time, that nobody has found before, e.g. how Christopher Columbus discovered the Americas.
Write out each fact you wish the other party to admit is true. When writing these facts, be as clear and concise as possible. Each request must be for a single fact; do not include multiple facts, compound questions, or subparts.
Discovery allows you to get information and evidence from the other party or other persons you can use in your lawsuit.
In a formal discovery, you formally ask for information and documents. You can also ask other people for information. For example, you may need documents from your spouse's employer. They also must respond.