Complex sentence: Mellor & Meigs, its predecessor and successor firm, was founded in 1906 by Walter Mellor and Arthur Ingersoll Meigs, who had worked together in the office of Theophilus P. Chandler, Jr. The young firm designed clubs and suburban residences in various historicist styles.
Split into simpler sentences: Mellor & Meigs, its predecessor and successor firm, was founded in 1906 by Walter Mellor and Arthur Ingersoll Meigs. They had worked together in the office of Theophilus P. Chandler, Jr., and designed clubs and suburban residences in various historicist styles.