When Fairchild bought out or absorbed Republic, most of the P-47 material was ditched, apparently with the exception of some prototype stuff. One or two employees risked their jobs by going dumpster diving and, IIRC, rescued a great deal of Thunderbolt documents. Presumably that collection went to the Long Island (cradle of aviation?) museum. Blessings be upon them, and a pox on the soulless suits who took over. As Ed Heinemann said of Douglas and the industry generally, aviation went to hell when it became aerospace with the lawyers and accountants replacing "aircraftsmen."