I want to know the answer to the following question:
What was the state of George VI's health during 1951?
All the background I'm provided with is that "When she toured Canada and visited President Harry S. Truman in Washington, D.C., in October 1951, her private secretary, Martin Charteris, carried a draft accession declaration in case the King died while she was on tour.". Is that enough to answer the question?