Hey all, I came across this thread in looking for some info on my build of Yippee. I thought you may find it interesting that I was able to obtain a copy of the Individual Aircraft Record Card from the USAF. Yippee S/N 44-23296 was accepted on 5-14-44, delivered to Long Beach, CA 5-23-44 and arrived for duty (yes, she was a regular fighting P-38J!) on 6-28-44. She was assigned to the Fifth Air Force, Pacific Theater with the 475th Fighter Group, and served until written off due to a flying accident, 29Jan45.
Dave