Thank you for your interest in applying at Allegheny County. The following information will assist you through the application process.The cover letter will follow once you've identified an opportunity for which to apply. You can type directly into the Cover Letter and. Application for Employment. Unless noted in the application instructions, always submit a cover letter when applying for a position. Please include a cover letter and resume, which maybe uploaded or sent to the address below. If you are emailing your cover letter and resume, be sure to maintain the same degree of formality and professionalism you would use in a hard copy letter. Unless noted in the application instructions, always submit a cover letter when applying for a position. Learn how to write a meaningful and compelling cover letter.