- Letters sent to Nancy Guthrie’s family after her disappearance are released NBC News
- Ransom note claims Nancy Guthrie died shortly after abduction AZPM News
- ‘Our hearts are in ruins’: Savannah Guthrie’s family pleads for help 6 months after mother disappeared CNN
- ‘Our hearts are in ruins,’ Savannah Guthrie says after kidnapped mother’s ransom notes released BBC
- ‘How Can Someone Vanish Without a Trace?’ WSJ