1. Look into granting financial power of attorney for limited transactions. Respect Madam, I am writing this letter to withdraw my admission.It is to humbly request you to kindly cancel my admission. The authorization letter must contain all the stipulation in the agreement including the powers, tasks, as well as limitation of the proxy. Authorization letter sample: Learn how to draft authorization letters with templates, formats, and detailed examples for all scenarios. This wikiHow will show you how write a letter of authorization. You can write an authorization letter to allow a hospital to disclose your medical information. Transfer a deceased person's interest in real property to their heirs at law. Note: This is NOT a fill-in-the-blank form. I'm a Texas resident and currently out of state with my vehicle.