2018-12-202018-12-201974-11-06https://hdl.handle.net/2152.3/11043One in a series of monthly progress reports for the Treadmill Development by Whitmore Enterprises. In addition, there is correspondence from Dr. Thornton to George Gaffney regarding the contract progress report.Dr. William Thorntonresearchexercisetreadmilldevelopmenthandwritten notesSpace Medicinecontract extension