2018-08-022018-08-02Unknownhttp://hdl.handle.net/2152.3/9694A space souvenir list labeled PPK - ThorntonDr. William Thorntonspace memorabiliasouvenir listPPK ListSTS-51BSpaceLab #3Space MedicineSTS-51B_SpaceLab_PPK-Thornton_SouvenirList