ME IK QO TX CQ TE ZX CO MW QC TE HN FB IK ME HA KR QC UN GI KM AV was the original Playfair Cipher given to Thomas Gates to decode by the Knights of the Golden Circle. The message deciphered was "LABOULAYE LADY WILL LEAD TO CIBOLA TEMPLES OF GOLD".
"Laboulaye Lady" referrers to the French Statue of Liberty in Paris, France, where the clue that led to the two Resolute Desks was found.