Letters.org has fifteen donation letter types. Not only does this site provide templates, it has a step by step process that collects data and incorporates it into the body of the letter. By clicking on each type of donation letter, a sample text comes up.
AZtemplates.org offers free downloadable request letter templates. The template can be edited to each user's needs. The purpose of a request letter and some helpful tips help the writer edit the body of the template.
Free MS word donation forms are available at wordstemplates.org/donation-form. This site does require downloading and installing templates which can be accessed from a computer browser.
On a home computer with Office 13, open a new Word document which will go to the option of templates for different types of documents among which are letters. Type in "donation letter" to find templates; however there is not a large selection and one of the types is for fund raising. If a Word document is already open, click on FILE and then select the option New; then proceed with a search.
Office templates are available at letterstemplates.com. This site provides free downloadable templates, the option to build a template, and samples; however, the selection is very limited.