Before writing TheFountainhead, author Ayn Rand spent six months working, without pay, in an architect's office. "Ayn's friends were aware that her social shyness had made it difficult for her to approach a stranger and request a favor; but they also knew that when her work was involved, she allowed nothing to interfere."
Lawyer, Ely Jacques Kahn, was the only one to know that Ayn's real purpose was research for a novel.

Source:  The Passion of Ayn Rand A Biography by Barbara Branden, Doubleday & Company, Inc., 1986.