<p>What are some of the large advertising firms in DC? And by marketing/advertising, I'm including client-side firms like L'Oreal and P&G.</p>
<p>I know there are many in New York. But can someone list them too?</p>
<p>What are some of the large advertising firms in DC? And by marketing/advertising, I'm including client-side firms like L'Oreal and P&G.</p>
<p>I know there are many in New York. But can someone list them too?</p>