Cover letters and résumés are two of the most important documents you need to successfully complete your job search. This page has resources for writing your cover letter to explain why you would be a great fit for a job.Applicants for Staff and Administrator positions are required to submit a letter of interest. Do not attach a cover letter unless specifically requested in the job announcement. Cover letters aren't even mentioned in the application. You will need it to apply for other positions or check the status of your application the next time you visit the site. Q) Do I have to fill out an application? Applications will be considered incomplete without a resume and writing sample. Do not substitute a resume for your application or write "see resume" on your application. Org for help with your online application.