In bailment contracts, a bailee letter is sometimes used. This is a formal letter that indicates when personal property is transferred from the bailor to another person, also known as the bailee. The letter will specify the details of the agreement including at what point the bailor will receive their property back. The types of property used in this kind of agreement can vary including cars, cash, or even real estate property. A lawyer's services can be retained to assist in drawing up this letter.