'Mattress Mack,' who sheltered people during Harvey, prepares to 'give thanks' with nearly 20,000 Texans at his free Thanksgiving dinner.

'Mattress Mack,' who sheltered people during Harvey, prepares to 'give thanks' with nearly 20,000 Texans at his free Thanksgiving dinner. https://t.co/Z7S4bVluST pic.twitter.com/zg2p7MUSsH

— ABC News (@ABC) November 23, 2017