Related Clues:

• H.S.T. predecessor
• President born 1/30/1882 whose initials are the basis of 17-, 24-, 47- and 55-Across
• H.S.T. preceder
• 32nd in a noted series
• Human rights advocate Eleanor
• 52-Across's representative in the 38-Across
• Creator of the SEC
• Yalta VIP
• 33-Across predecessor
• Yalta conf. attendee
• Fireside chatter
• Pres. for over 12 years
• TVA pres.
• 32nd president and this puzzle's theme
• Pres. who nominated Hugo Black