In the 1930s and 1940s, Hull appeared in three Broadway hits, as a batty matriarch in You Can't Take It with You (1936), as a homicidal old lady in Arsenic and Old Lace (1941), and in Harvey (1944).
Under 30- och 40-talet, dök Hull upp i tre Brodwaysuccéer, som en matriark i You Can't Take It with You (1936), som en mordisk gammal dam i Arsenik och gamla spetsar (1941), och i pjäsversionen av Min vän Harvey (1944).