What do you need to include in your donation acknowledgment letter? Duties of Conservator and Acknowledgment of Receipt of Handbook for Conservators.GC-350, Letters of Conservatorship. Donate online now or download a Donation Form (PDF) to fill out, print and mail in along with your check. Please write your name legibly, sign the form and enter your employee number. We are able to provide a Donation Receipt Form for tax purposes. All donations must be approved before they are received. We are able to provide a Donation Receipt Form for tax purposes. All donations must be approved before they are received. You will always receive an e-mailed receipt of your donation.