I have arranged for letters of support to be sent directly from three references ... I have been developing some of these in my postdoctoral work, but will move my own research in a new direction, ...

Because no cover letter can convey all this information appropriately ... Postdocs can make appointments for individualized feedback with the Office of Postdoctoral Affairs.

A cover letter introduces you to a potential employer and should accompany your résumé, unless the employer requests otherwise. If there is an option to include a cover letter, we always recommend ...