Possible Clues:

• Hickok's last hand, it's said ... and what's literally found in four Down puzzle answers
• Excellent two-pair hand
• Hickok's last hand, reportedly
• Great two-pair poker hand
• Hickok's last hand, so it's said
• Hand with two bullets and two deuces, e.g
• Two pairs that beat king-high
• Hickok's poker hand when he was shot, so they say
• Best two-pair poker hand