The Postal Service in Newtown, Conn., has set up a post office box for cards and letters of support for shooting victim families, the American Red Cross has announced.

This is the address: Messages of Condolence for Newtown, PO Box 3700, Newtown, CT 06470.

Those who want to make a donation to support the affected families, the United Way of Western Connecticut has created a Sandy Hook School Support Fund. For more information, visit https://newtown.uwwesternct.org.

Are you receiving Express, our free daily e-mail edition? See a sample and sign-up for Express.