Where did Rand seek refuge after fleeing Soviet Russia as noted in the book, The Virtue of Selfishness?

Rand sought refuge in the United States after fleeing Soviet Russia. In her youth, she was fascinated by American history and believed that America's Founding Fathers created the most ideal form of government and society, that which promoted capitalism, democracy, and the rights of individuals. It was the first nation to draw up a bill of rights which outlined humans' natural rights to life, liberty, and the pursuit of happiness, and which subordinated the government to the individual.