How To Write A Letter Dale Carnegie . Cover letter using advice from how to win friends and influence people by dale carnegie. Schlueter:” would be an example. How to win friends and influence people revised edition dale carneg… from www.slideshare.net All of that was just how to address part of the envelope! Specifically his example of a banker who sends a letter to banks in a new city and shows she has skills, but highlights. Hesitation and sarcasm are easy to interpret.