Kerwin, Joseph2018-09-242018-09-241976-08-11https://hdl.handle.net/2152.3/10193A United States Government Memorandum regarding the Payload Specialist Selection and Training.United States Government MemorandumDr. William ThorntonMissionsspace shuttleSpace MedicinePayload Specialist SelectionTrainingMemo Payload Specialist Selection and Training 1976