Keep it short. The letter should be fewer than 250 words and should focus on one or two key points. That gives the letter a better chance of being published and read. Use the letter more than once. Today, the daily newspaper in your area, and the Des Moines Register.
Some newspapers take several weeks to publish letters.
Put your name, address, and phone number on the letter. Unsigned letters are not used. The newspaper may want your phone number to verify your letter. Make it legible. Some newspapers may require typed letters.