This appears to be pretty accurate. I noticed that GA-15 XO-47 and GA-43 were missing from North American produced aircraft. While bearing General Aviation charge number, they were in fact fabricated and delivered by North American Aviation. While GA-43 existed (Fairchild 150) under design leadership Virginius Clark, the last one was re-designed and built as water landing version for delivery to Pan American by North American. No more were built because the airliner was underpowered.