Possible Clues:

• Ex-president who swore in President Hoover
• Bryan defeater, 1908
• President known as "Big Bill"
• Start to talk to stern president
• ___-Hartley Act
• President whose father co-founded Yale's Skull and Bones
• Chief Justice appointed by Harding
• Time to get behind US President
• Sherman was his veep
• Rotund president