There are some terrific agencies that sell cheeseburgers, spark plugs, and chewing gum. That's not who we are. Whether it's for the environment, health, education, transportation, humanitarian aid, or wildlife preservation, we are advocates for positive change. This isn't a division of our company. This is our company. Sherry Matthews Group is a national marketing communications agency based in Austin, Texas, with offices in New York City and Washington, DC.