Which 1925 academic edition did J.R.R. Tolkien publish with E.V. Gordon?

J.R.R. Tolkien and E.V. Gordon published a 1925 academic edition of Sir Gawain and the Green Knight.

The edition was titled Sir Gawain and the Green Knight and presented the Middle English poem with scholarly editing and commentary. Gordon was Tolkien’s colleague at the University of Leeds, where both worked in the study of English language and medieval literature. The book became an important contribution to the academic study of the poem.

Tolkien’s interest in medieval texts also shaped his public reputation as a scholar. His 1925 edition helped establish his expertise before he became widely known as the author of The Hobbit and The Lord of the Rings. He later translated the poem into modern English, with the translation published posthumously.

Tolkien wrote and lectured about several Old and Middle English works, including Beowulf and Pearl. Those texts are related to his academic field, but the 1925 collaborative edition with Gordon was specifically devoted to Sir Gawain and the Green Knight.