Writing a letter is a simple and meaningful way for volunteers nationwide to say "Thank You" to all who serve. You are always so respectful and kind to the people we serve.Here is a sample letter that you would have them fill in with supervisor from the volunteer place. " "You care for your students every day. To prove your voluntary work, you can obtain photographed proof or receive an all-mighty reference letter. QUALIFICATIONS. To be appointed a volunteer deputy registrar, a person must: • be at least 18 years old;. • be a United States citizen;. Volunteers are the foundation of our council.