Specify the donation amount or value. A simple donation letter sample can start with, "You've been a big part of our organization's fabric over the years.The signature of an authorized agent of the charitable organization. If you work in a nonprofit, you're probably kneedeep in crafting your donation letters. Make adjustments to the template. Use the top and left panel tools to modify Silent auction donation form. No information is available for this page. Write "deceased" and the date of death above your spouse's name. Forms on this website are PDFs with fillable fields. Forms should be downloaded to your computer before filling in the fields.