As well as the regular seminars at the Institute, many of which I attended, especially those run by virologists Tom Rivers and Frank Horsfall, I went to international and national scientific meetings held in New York, Boston, Denver and Cincinnati. Bobbie and I also travelled extensively, by Greyhound bus, to many places on the East Coast and as far west as Kentucky, with René Dubos' introductions, always being welcomed by the many scientists that I met. Among the most memorable was a drive from Elizabethtown up the Adirondack Mountains to Lake Saranac in mid-May. When we started, the trees were in full leaf. At Saranac Lake there was still snow on the ground and the trees were just coming into leaf. My visa expired at the end of July, so by arrangement with the ANU, Bobbie and I embarked on the Queen Mary, to return to Australia via Europe.