Here are some of his notable works:
* "The Poetics of Aristotle" (1930): Herrick's doctoral dissertation, which provided a new translation and interpretation of Aristotle's classic work on drama.
* "Tragicomedy: Its Origin and Development in Renaissance England" (1955): This groundbreaking book established Herrick as a leading expert on the development of tragicomedy in English drama.
* "Shakespeare and the Popular Tradition" (1976): Herrick argued in this book that Shakespeare was deeply influenced by the popular traditions of his time, particularly the theater of the Elizabethan era.
* "The Sources of Jonson's Plays" (1957): A study of the sources and influences on the plays of Ben Jonson, a key figure in the English Renaissance.
* "The English Theater in the Age of Shakespeare" (1975): A broad overview of English theater from the late medieval period to the Restoration.
* "Love and Comedy in the English Renaissance" (1988): This book explored the role of love and comedy in English Renaissance plays, particularly in the works of Shakespeare and his contemporaries.
In addition to these major works, Herrick published numerous articles and essays on a wide range of topics related to English literature, including the theater, poetry, and literary history.
He was also a respected teacher and mentor, having taught at several universities including Columbia University and the University of Illinois at Urbana-Champaign.