Niall
WP first came to America in 1895 and made an extensive tour of the Northeast. He opened his retail shop in NYC at that time, and returned briefly in 1896 (the shop closed in 1898). So there had been a two decade gap between visits.
As far as I know his health was good; he was around fifty years old. He had been designing golf courses prior to the War at breakneck speed, and may have even increased that pace when he came to America.
I was curious how the public looked toward the war effort during WWI. Did those at home rally around the effort, doing what they could to support it? If I recall correctly Colt, who was also too old serve, was in charge of food or food distribution in his part of Berkshire. My impression was it was time of sacrifice at home. Because of his financial situation or obligations was it impossible for WP to sacrifice?
There was an extensive article written in American Golfer about WP on the occasion of his trip over, and I got the impression he was very emotional about the whole thing.