Pro­fes­sor of the His­tory of Ar­chi­tec­ture at Co­lum­bia Uni­ver­sity.

Ham­lin was a gra­duate of Am­herst Col­lege. He also stu­died at the Ecole des Beaux-Arts and under W. R. Ware and J. Gau­det. From 1903 to 1912 he was as­so­cia­ted with Ham­lin and War­ren on buil­dings for Ro­bert Col­lege, Con­stan­ti­nople. He was made a mem­ber of the Ame­ri­can In­sti­tute of Ar­chi­tects in 1911 and in 1916 was made a Fel­low of the In­sti­tute. His work in­clu­ded the Ame­ri­can School of Clas­si­cal Stu­dies at Athens, Greece; the soldiers' mo­nu­ment at Whi­t­ins­ville, Mas­sa­chu­setts, with Her­mon MacNeil, sculp­tor; many re­si­den­ces, churches, and clubs. He was the aut­hor of nu­merous books on the his­tory of ar­chi­tec­ture.