Definitions for "Letter of Support"
A document prepared by an “expert” or person from the community or other organizations acknowledging they support the application for a grant. Frankly, most that I have seen are “Blah, blah, blah.” If a funding organization says that it wants letters of support, do not include any with an application. If a funding organization asks for letters of support, be certain to ask for them early and be sure it addresses what the connection is to the project for which you seek funds.
Endorsements about a project's efforts from organizations and individuals who are considered credible in the eyes of the funder.
Written endorsement concerning a project to be undertaken by an organization or individual if the proposal would be funded. Letters of support are obtained by organizations or individuals who are considered credible in the eyes of the funder.