Burchell, Howard M.D.2018-04-102018-04-101973-01-31http://hdl.handle.net/2152.3/7769Correspondence from Howard Burchell, M.D. regarding medical clearance for Deke Slayton to reenter the space program.Deke Slaytonmedical clearanceDr. Charles Berryatrial fibrillationLetter re Slayton's return to active astronaut duty 1-31-73