Let me see....from memory on the Douglas Plant. This was a government-funded factory built in the early forties and became known as Air Force Plant #3. Douglas was the manufacturer that ran the plant during WWII and post-war.
This plant built the A-24B, B-24, and A-26 during the war. The A-24 and B-24 were on the assembly lines at the same time for a little while. Also there was modification work done at Douglas/Tulsa on A-20s, B-24s, A-26s and the YB-40 escort conversions of the B-17s were done here.