Keally was born in Pittsburgh[1] and first trained in architecture at the Carnegie Institute of Technology in 1912, then he moved to the University of Pennsylvania.[2] Twelve pages of his travel sketches from two years in Europe were published in Pencil Points of June 1928, raising his professional profile.[3]
Keally's first major commission was won in a national competition with 75 entries—a federally-funded monument to the First Permanent Settlement of the West, erected in Harrodsburg, Kentucky, in what was then Pioneer Memorial State Park. Keally's partner in the competition entry was the architectural sculptor Ulric Ellerhusen. Three years later the same team of Keally and Ellerhusen won the national competition for the Oregon State Capitol, with Keally aligning himself with the larger New York firm of Trowbridge & Livingston.
Ford Foundation Library aka "Henry-Ford-Bau", Free University of Berlin, Berlin, Germany, as library consultant associated with German architects Sobotka, Mueller, 1954[6]
Amerika-Gedenkbibliothek (America Memorial Library), Berlin, Germany, as library consultant associated with German architects Jobst Kreuer Wille Bornemann, 1954[6]