2018-01-252018-01-251974-05-26http://hdl.handle.net/2152.3/4953This image reflects a written document titled Research and Technology Operating Plan from Whitmore Enterprises regarding an inflight exercise treadmill. It was prepared by William E. Thornton.inflightExerciseTreadmillWilliam E. ThorntonresearchSpace MedicineWhitmore Enterprisesprototype