Their earliest commissions were small but distinguished , but by the 1920 's they had become one of New York 's major firms , with works like the spectacular interior of the Bowery Savings Bank at 110 East 42nd Street ( 1926 ) , the rich , medieval Academy of Medicine at 103rd and Fifth of the same year , and the August New York Athletic Club at Seventh Avenue and Central Park South ( 1927 ) .