Donate. Make a Donation. Fill out my LGL Form!A downloadable donation form is available if you would like to mail in your payment. Click below to download the form. In this post, I'm breaking down how to write a donation letter. We've compiled common types of donation requests, plus carefully crafted templates that your team can use to jumpstart your outreach. Make a Donation to The Arc Middlesex. The Arc Middlesex County relies on private donations to further its mission and to launch new initiatives. Learn how to write the best donation request letters to secure support for your nonprofit, including six templates to get started. Let's walk through common examples of donation letters, starting with a template of the basic format to follow.