Query: What style did architect James Gamble Rogers use for the principal buildings on the new Chicago campus?
Context: In connection with a 1917 master plan for a central Chicago campus and President Walter Dill Scott's capital campaign, 8.5 acres (3.44 ha) of land were purchased at the corner of Chicago Avenue and Lake Shore Drive for $1.5 million in 1920. The architect James Gamble Rogers was commissioned to create a master plan for the principal buildings on the new campus which he designed in collegiate gothic style. In 1923, Mrs. Montgomery Ward donated $8 million to the campaign to finance the construction of the Montgomery Ward Memorial Building which would house the medical and dental schools and to create endowments for faculty chairs, research grants, scholarships, and building maintenance.