Landscape architectural historian at Dumbarton Oaks, 1972-1988. Blair was raised in Colorado Springs, CO. She earned her B.A. from Vassar College in 1946 and an M.A. from the Institute of Fine Arts, New York University. She married Gregory MacDougall, changing her name at that time (later divorced). Living in Boston during the 1960s and early 1970s, she served on the Cambridge Historical Commission, co-authoring volume two of the Cambridge Architectural Survey. She was later appointed chair of the newly formed Boston Landmarks Commission. In 1970 she earned her Ph.D.