Dorothy L. Sayers based the physical description of her fictional character Lord Peter Wimsey on that of Ridley after having seen him read his poem "Oxford" at the Encaenia ceremony in July of 1913. (The poem went on to win the Newdigate Prize.)
Ridley spent a year as a visiting professor at Bowdoin College. He is the author of Studies in Three Literatures : English, Latin, Greek Contrasts and Comparisons (ISBN 0-31-320189-7).