I only found one physician by the name Robert Leach in Illinois and it was Robert W Leach practicing at 305 E Chestnut St Fairbury, Illinois 61739-1684 You might send a note to him and ask if he's the right one. There was also a Dr Robt Leach at Boston University Medical Center. He was chairman of the Orthopaedic Dept. Retired now but likely still involved enough that they know where he is. Good luck.