Since Kee Bird's demise at least one more B-29 has been recovered from China Lake and restored to fly and I think parts of at least one further B-29/B-50 airframe survives there which could make up a static exhibit if the will and money is available. Kermit's got several B-29s stored at Borrego Springs as well - certainly two complete dismantled airframes plus parts of a third - so it appears from Google Maps...