Gothic art
During the late 1890s Prior's practice received few commissions. The study of Gothic art and architecture became one of Prior's major concerns the period. In 1900 he published "A History of Gothic Art in England", which as rapidly recognised as a standard text. This was followed by "The Cathedral Builders in England" in 1905, "An Account of English Medieval Figure-Sculpture" in 1912, which provided an exhaustive account of figurative sculpture from the 7th –to the 16th Century for the first time.