US airplane production during WWII
With 18'200 units the B-24 has the highest number of a bomber built in the US during WWII.
Next was the B-17 Flying Fortress with 12'700 units and third was the B-25 Mitchell with 10'000 units.
 

Consolidated B-24 Liberator

The Consolidated B-24 Liberator is an American heavy bomber, designed by Consolidated Aircraft of San Diego, California.
The B-24 was a modern design featuring a highly efficient, high aspect ratio Davis wing. The wing gave the Liberator a high cruise speed, long range and the ability to carry a heavy bomb load.
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The B-24 was relatively difficult to fly and had poor low-speed performance. The aircrews tended to prefer the B-17 which was more robust than the B-24.

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B-24 H-15-FO Liberator with the serial number 42-52466 was built by Ford at Willow Run (Michigan), hence the FO.
Tech data