The letter must explain who is gifting the money, where the donor's funds are coming from and the relationship between the donor and the recipient. Affidavit of Motor Vehicle Gift Transfer.The owner will need to complete and sign a form VTR-60. Send the completed form and a check or money order to our mailing address. The document must be the original; Xerox copies cannot be accepted. Edit, sign, and share authorization letter harris county online. No need to install software, just go to DocHub, and sign up instantly and for free. A gift letter must contain the donor's name, the gift's value, confirmation that the gift is not to be repaid, and the donor's signature. The applicant should sign the copy in front of a notary and have the signed paper notarized. The applicant should sign the copy in front of a notary and have the signed paper notarized.