Who knew there were so many people who fits the narrative.
For whatever reason, the late 1940s and early 1950s were a time of renewed interest in Stanleys and other steam-powered cars. People started puling them out of barns, often with their wooden bodies rotted beyond repair. This is why the "rotted Stanley discovered and rebodied in the 1950s" is a common narrative.
What's uncommon is: 1) the person who found this car is the same person who re-bodied it; 2) the work was completed in 1950; 3) the person became somewhat renowned for the having done this; 4) the person was from Pennsylvania; and 5) the person had built a complete automobile sometime prior to this. The difficulty has been identifying someone who meets all five of these criteria.