What do you need to include in your donation acknowledgment letter? On this page below is a list of LOCAL forms that can be completed online and then printed.The form you need may be in this list. If you donated to a nonprofit at one of our locations, you are able to access an electronic copy of our nonprofit partners' tax receipt below. By Mail - Print and fill out this form and mail it along with your donation. Donors receive an official acknowledgement from the Santa Clara County Library. Fill this donation request form and you will receive your already filled donation receipt in PDF format directly in your inbox. After your vehicle donation is complete, we send your tax receipt in the mail. A receipt recognizing your contribution will be emailed to you via PayPal upon receipt. It serves as a confirmation that their donation was received and is greatly appreciated.