The purpose of this document is for the use of requesting surplus property from the County of. Riverside. Donations are available to support programs, activities or equipment purchase.In this post, I'm breaking down how to write a donation letter. Kennywood (Link to Application). Learn how to write effective fundraising letters that inspire more support from donors. Explore best practices and templates in this comprehensive guide. Your giving goes directly towards the ministry of Riverside that includes providing camperships. This guide will walk you through the basic steps to start your nonprofit in California. For in-kind donations like raffle or silent auction items please fill out the form below. Donation request letters are nonprofit fundraising letters to be sent out to individuals or other organizations, like local businesses.