2018-12-212018-12-211981-06-24https://hdl.handle.net/2152.3/11076A NASA memorandum from Dr. William Thornton regarding the treadmill for STS-2Dr. William ThorntonresearchexercisetreadmillSTS-2Space MedicineNASAmemorandumTreadmill_71-81_1_SupportSTS-2Treadmill_06.24.81