To petition the Court to allow you to withdraw funds from a minor's conservatorship account, you will need the following documents. You can write a letter, sign it and hand it to a bank professional.They will accept the letter but, may still have you sign their form. Empower a trusted representative with an Authorization Letter. Make a free Authorization Letter in minutes with our customizable template. You will have to file the originals of the actual receipts for what you bought too, so be sure that you do not throw them away. Court Forms and Instructions. Completing the Forms. This letter will serve as authorization for. Online legal forms are useful for frequent, basic, and necessary tasks.