Raymond Burr he comes around before anyone else and does what he can to help. He's a great star—in the old tradition." During the filming of his last Perry Mason movie in the spring of 1993, Raymond Burr fell ill. A Viacom spokesperson told the media that the illness might be related to the renal cell carcinoma (malignant kidney tumor) that Burr had removed that February. It was determined that the cancer had spread to his liver and was at that point inoperable. Burr threw several "goodbye parties" before his death on September 12, 1993, at his Sonoma County ranch near Healdsburg.
Thomas Burr Osborne (chemist) also established the importance of lysine and tryptophan in a healthy diet. Thomas Burr Osborne (chemist) Thomas Burr Osborne (August 5, 1859 – January 29, 1929) was a biochemist and early discoverer of Vitamin A. He is known for his work isolating and characterizing seed proteins, and for determining protein nutritional requirements. His career was spent at the Connecticut Agricultural Experiment Station. Thomas was the son of lawyer Arthur Dimon Osborne and the grandson of US Representative Thomas Burr Osborne. His life exhibited "a single purpose, the understanding of the relationships of proteins to each other and the animal world.