Samuel Klausman Lawrence Parks was born in Olathe, Kansas, on December 13, 1914, of German and Irish descent. As a child growing up in Joliet, Illinois, he was plagued by a variety of illnesses, including rheumatic fever, but persevered with physical exercise and sheer strength of will. Majoring in science at the University of Illinois, his plans to become a doctor dissolved when, to the dismay of his parents, he found a passionate sideline in college dramatics. He began appearing in touring shows, then made the big move to New York, finding initial employment as an usher at Carnegie Hall and a tour guide at Radio City. Following a number of summer stock shows, he made an inauspicious 1937 Broadway debut with a minor role in the Group Theatre's presentation of "Golden Boy". Developing a close-knit relationship with the Group, he was just...