DALLAS: Hill and Knowlton's Dallas office picked up the account for TravisDavid following a competitive pitch. The account will be led by Tiffany Heikkila, VP, who, along with a team, will help the online home décor retailer raise awareness and funds for Autism Speaks. Separately, H&K's Chicago office has begun working with the Canadian National Railway, Canada's largest freight railroad. The account, which is headed by Bill Griffin, the agency's Midwest public affairs practice leader, will focus on government relations and community support for an ...