 According to Woudhuysen, 'William Baldwin was instrumental in the creation of Ferrers's largest surviving literary work, his contributions to "The Mirror for Magistrates", in which he was also associated with Sir Thomas Chaloner and Thomas Phaer'.Woudhuysen conjectures that Ferrers wrote several pieces for a suppressed edition of "The Mirror for Magistrates" published about 1554 which survives only in fragments.The 1559 edition includes his tragedies of Tresilian and Thomas of Woodstock, but his other contributions were suppressed in that edition, and not printed until several years later.