3. This airline was operating a flight named the "The Irish Mercury" in 1949. The eastbound transatlantic service was flown was flown once a week and two stops were made en route between the originating city and the final destination. Identify the air carrier, the originating city, the two intermediate stops, the final destination and the aircraft.

I'll get this one started with a total shot in the dark. First off, when I think of the term "Mercury", I think of American Airlines' DC-6 transcon services, but since you say it was a trans-Atlantic flight then ah'mon figure it must've been a service to Ireland. Let's stick with American Airlines' overseas division - American Overseas Airlines - operating a Constellation New York - Boston - Gander - Shannon.