Generally, a cover letter for any topic serves the purpose of introducing a submitted document to a source. This is true with a letter for proposals as well. The type of proposal being written dictates what the cover letter should contain and how it is presented.
A common type of proposal is a grant proposal. Forming a cover letter for a grant proposal should at minimum include the .
amount being requested in the proposal and explain the intended project to the recipient. In addition it should outline or provide an overview of the proposal in its entirety.
For a standard proposal cover letter, the applicant should introduce themselves and clearly state the job they wish to perform. It is also appropriate for them to identify key attributes or credentials they possess that qualify them to make a proposal.
More Reference Links: http://www.career.vt.edu/JobSearchGuide/CoverLetterSamples.html http://grantspace.org/Tools/Knowledge-Base/Funding-Research/Proposal-Writing/Proposal-cover-letters