Recorded at The Bitter End folk club, Bill Cosby’s debut is a key link in the stand-up’s evolution from supper-club antics to topical satire. He covers a lot of ground: sports, subways, and the absurdities of youth. The set’s anchor is a dialog between God and an exasperated Noah, who is fed up with his ark. When you’re not doubled over in laughter, soak up The Coz’s delivery: swift and rhythmic, never manic. He already possessed a powerful command of his craft.