TO: Chief of Police, City of Dallas, Texas. A copy of the registered owner's valid U.S. State issued Driver License or Personal Identification Card or Federal Identification is required.1500 Marilla Street Room 5B North Dallas, TX 75201 Phone 214.670. C Letter of Authorization. An authorization agreement lets a nonparent make decisions for a child without going to court. Authorization to fill in and submit any application or other information. You will need: A written statement of authorization referencing the vehicle, authorized person, and whether a ticket for expired registration has been received. Available Forms: Exemption Forms, Business Personal Property Forms, Other Forms, Human Resources. All forms require the Adobe Acrobat Reader plug-in. • Power of attorney or notarized letter of authorization—if someone else is turning the vehicle in for you.