Moore was an aut­ho­rity on me­di­eval and re­nais­sance art and ar­chi­tec­ture and eme­ri­tus Pro­fes­sor of Art at Har­vard Uni­ver­sity. From 1871 to 1879 he was an in­struc­tor in free hand drawing and water color at Har­vard and for the next twelve years taught drawing and prin­ci­ples of de­sign at the Uni­ver­sity. In 1891 he was ap­poin­ted an as­sis­tant pro­fes­sor in Fine Arts, five years later was made pro­fes­sor of art, and in 1909 when he re­si­gned his chair was de­si­gna­ted Pro­fes­sor Eme­ri­tus. For some years he ser­ved as cu­ra­tor of the Wil­liam Hayes Fogg Art Mu­seum at Har­vard and sub­se­quently as di­rec­tor until the time of his re­ti­re­ment. He was the aut­hor of many books on art and ar­chi­tec­ture, among them “The De­ve­lop­ment and Cha­rac­ter of Got­hic Ar­chi­tec­ture”, “Ex­am­ples for Ele­men­tary Prac­tice in De­linea­tion”, “Cha­rac­ter of Re­nais­sance Ar­chi­tec­ture”, and “Me­di­eval Church Ar­chi­tec­ture of Eng­land.”